Home / 720,217,581.13-993,887,306.22-406,945,069.05

Finding the Fourth Proportional to 720,217,581.13, 993,887,306.22 and 406,945,069.05

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Solution

The fourth proportional to 720,217,581.13, 993,887,306.22 and 406,945,069.05 is: 561,576,874.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,217,581.13 : 993,887,306.22 = 406,945,069.05 : x
  2. Step 2: Convert to fraction form
    720,217,581.13/993,887,306.22 = 406,945,069.05/x
  3. Step 3: Cross multiply
    720,217,581.13x = 993,887,306.22 × 406,945,069.05
  4. Step 4: Simplify right side
    720,217,581.13x = 404,457,538,457,616,448
  5. Step 5: Solve for x
    x = 404,457,538,457,616,448/720,217,581.13
  6. Step 6: Final answer
    x = 561,576,874.90

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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.