Home / 719,331.91-992,678.12-397,042.09

Finding the Fourth Proportional to 719,331.91, 992,678.12 and 397,042.09

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Solution

The fourth proportional to 719,331.91, 992,678.12 and 397,042.09 is: 547,918.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,331.91 : 992,678.12 = 397,042.09 : x
  2. Step 2: Convert to fraction form
    719,331.91/992,678.12 = 397,042.09/x
  3. Step 3: Cross multiply
    719,331.91x = 992,678.12 × 397,042.09
  4. Step 4: Simplify right side
    719,331.91x = 394,134,992,484.07
  5. Step 5: Solve for x
    x = 394,134,992,484.07/719,331.91
  6. Step 6: Final answer
    x = 547,918.13

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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.