Home / 723,139.83-997,917.08-400,847.13

Finding the Fourth Proportional to 723,139.83, 997,917.08 and 400,847.13

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Solution

The fourth proportional to 723,139.83, 997,917.08 and 400,847.13 is: 553,160.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,139.83 : 997,917.08 = 400,847.13 : x
  2. Step 2: Convert to fraction form
    723,139.83/997,917.08 = 400,847.13/x
  3. Step 3: Cross multiply
    723,139.83x = 997,917.08 × 400,847.13
  4. Step 4: Simplify right side
    723,139.83x = 400,012,195,491.75
  5. Step 5: Solve for x
    x = 400,012,195,491.75/723,139.83
  6. Step 6: Final answer
    x = 553,160.23

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.