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Finding the Fourth Proportional to 656,884.70, 985,715.85 and 432,892.70

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Solution

The fourth proportional to 656,884.70, 985,715.85 and 432,892.70 is: 649,595.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,884.70 : 985,715.85 = 432,892.70 : x
  2. Step 2: Convert to fraction form
    656,884.70/985,715.85 = 432,892.70/x
  3. Step 3: Cross multiply
    656,884.70x = 985,715.85 × 432,892.70
  4. Step 4: Simplify right side
    656,884.70x = 426,709,195,739.30
  5. Step 5: Solve for x
    x = 426,709,195,739.30/656,884.70
  6. Step 6: Final answer
    x = 649,595.27

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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.