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Finding the Fourth Proportional to 643,950.70, 966,098.85 and 574,312.30

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Solution

The fourth proportional to 643,950.70, 966,098.85 and 574,312.30 is: 861,622.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,950.70 : 966,098.85 = 574,312.30 : x
  2. Step 2: Convert to fraction form
    643,950.70/966,098.85 = 574,312.30/x
  3. Step 3: Cross multiply
    643,950.70x = 966,098.85 × 574,312.30
  4. Step 4: Simplify right side
    643,950.70x = 554,842,452,570.86
  5. Step 5: Solve for x
    x = 554,842,452,570.86/643,950.70
  6. Step 6: Final answer
    x = 861,622.56

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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.