Home / 1,207,310,699.40-1,810,966,049.10-431,328,107.40

Finding the Fourth Proportional to 1,207,310,699.40, 1,810,966,049.10 and 431,328,107.40

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Solution

The fourth proportional to 1,207,310,699.40, 1,810,966,049.10 and 431,328,107.40 is: 646,992,161.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,310,699.40 : 1,810,966,049.10 = 431,328,107.40 : x
  2. Step 2: Convert to fraction form
    1,207,310,699.40/1,810,966,049.10 = 431,328,107.40/x
  3. Step 3: Cross multiply
    1,207,310,699.40x = 1,810,966,049.10 × 431,328,107.40
  4. Step 4: Simplify right side
    1,207,310,699.40x = 781,120,558,523,958,400
  5. Step 5: Solve for x
    x = 781,120,558,523,958,400/1,207,310,699.40
  6. Step 6: Final answer
    x = 646,992,161.10

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Double scale
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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.