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Finding the Fourth Proportional to 719,018.83, 992,251.29 and 396,740.89

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Solution

The fourth proportional to 719,018.83, 992,251.29 and 396,740.89 is: 547,505.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,018.83 : 992,251.29 = 396,740.89 : x
  2. Step 2: Convert to fraction form
    719,018.83/992,251.29 = 396,740.89/x
  3. Step 3: Cross multiply
    719,018.83x = 992,251.29 × 396,740.89
  4. Step 4: Simplify right side
    719,018.83x = 393,666,659,898.25
  5. Step 5: Solve for x
    x = 393,666,659,898.25/719,018.83
  6. Step 6: Final answer
    x = 547,505.36

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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.