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Finding the Fourth Proportional to 719,006.72, 992,212.80 and 396,747.20

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Solution

The fourth proportional to 719,006.72, 992,212.80 and 396,747.20 is: 547,502.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,006.72 : 992,212.80 = 396,747.20 : x
  2. Step 2: Convert to fraction form
    719,006.72/992,212.80 = 396,747.20/x
  3. Step 3: Cross multiply
    719,006.72x = 992,212.80 × 396,747.20
  4. Step 4: Simplify right side
    719,006.72x = 393,657,650,204.16
  5. Step 5: Solve for x
    x = 393,657,650,204.16/719,006.72
  6. Step 6: Final answer
    x = 547,502.05

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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.