Home / 1,331,105.40-1,996,658.10-911,201.40

Finding the Fourth Proportional to 1,331,105.40, 1,996,658.10 and 911,201.40

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Solution

The fourth proportional to 1,331,105.40, 1,996,658.10 and 911,201.40 is: 1,366,802.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,105.40 : 1,996,658.10 = 911,201.40 : x
  2. Step 2: Convert to fraction form
    1,331,105.40/1,996,658.10 = 911,201.40/x
  3. Step 3: Cross multiply
    1,331,105.40x = 1,996,658.10 × 911,201.40
  4. Step 4: Simplify right side
    1,331,105.40x = 1,819,357,656,041.34
  5. Step 5: Solve for x
    x = 1,819,357,656,041.34/1,331,105.40
  6. Step 6: Final answer
    x = 1,366,802.10

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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.