Home / 812,871.42-1,219,346.01-392,500.86

Finding the Fourth Proportional to 812,871.42, 1,219,346.01 and 392,500.86

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Solution

The fourth proportional to 812,871.42, 1,219,346.01 and 392,500.86 is: 588,770.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,871.42 : 1,219,346.01 = 392,500.86 : x
  2. Step 2: Convert to fraction form
    812,871.42/1,219,346.01 = 392,500.86/x
  3. Step 3: Cross multiply
    812,871.42x = 1,219,346.01 × 392,500.86
  4. Step 4: Simplify right side
    812,871.42x = 478,594,357,562.57
  5. Step 5: Solve for x
    x = 478,594,357,562.57/812,871.42
  6. Step 6: Final answer
    x = 588,770.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.