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Finding the Fourth Proportional to 577,898.40, 865,681.20 and 328,288.80

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Solution

The fourth proportional to 577,898.40, 865,681.20 and 328,288.80 is: 491,770.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,898.40 : 865,681.20 = 328,288.80 : x
  2. Step 2: Convert to fraction form
    577,898.40/865,681.20 = 328,288.80/x
  3. Step 3: Cross multiply
    577,898.40x = 865,681.20 × 328,288.80
  4. Step 4: Simplify right side
    577,898.40x = 284,193,442,330.56
  5. Step 5: Solve for x
    x = 284,193,442,330.56/577,898.40
  6. Step 6: Final answer
    x = 491,770.60

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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.