Home / 747,357.69-1,031,386.46-420,691.79

Finding the Fourth Proportional to 747,357.69, 1,031,386.46 and 420,691.79

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Solution

The fourth proportional to 747,357.69, 1,031,386.46 and 420,691.79 is: 580,573.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,357.69 : 1,031,386.46 = 420,691.79 : x
  2. Step 2: Convert to fraction form
    747,357.69/1,031,386.46 = 420,691.79/x
  3. Step 3: Cross multiply
    747,357.69x = 1,031,386.46 × 420,691.79
  4. Step 4: Simplify right side
    747,357.69x = 433,895,816,039.16
  5. Step 5: Solve for x
    x = 433,895,816,039.16/747,357.69
  6. Step 6: Final answer
    x = 580,573.16

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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.