Home / 1,260,811,425.40-1,891,217,138.10-399,168,417.40

Finding the Fourth Proportional to 1,260,811,425.40, 1,891,217,138.10 and 399,168,417.40

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Solution

The fourth proportional to 1,260,811,425.40, 1,891,217,138.10 and 399,168,417.40 is: 598,752,626.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,811,425.40 : 1,891,217,138.10 = 399,168,417.40 : x
  2. Step 2: Convert to fraction form
    1,260,811,425.40/1,891,217,138.10 = 399,168,417.40/x
  3. Step 3: Cross multiply
    1,260,811,425.40x = 1,891,217,138.10 × 399,168,417.40
  4. Step 4: Simplify right side
    1,260,811,425.40x = 754,914,151,975,134,208
  5. Step 5: Solve for x
    x = 754,914,151,975,134,208/1,260,811,425.40
  6. Step 6: Final answer
    x = 598,752,626.10

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Half scale
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Double scale
Find fourth proportional to 1,260,811,426.40, 1,891,217,139.60 and 399,168,418.40
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.