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Finding the Fourth Proportional to 580,809.60, 870,177.60 and 491,644.80

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Solution

The fourth proportional to 580,809.60, 870,177.60 and 491,644.80 is: 736,589.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,809.60 : 870,177.60 = 491,644.80 : x
  2. Step 2: Convert to fraction form
    580,809.60/870,177.60 = 491,644.80/x
  3. Step 3: Cross multiply
    580,809.60x = 870,177.60 × 491,644.80
  4. Step 4: Simplify right side
    580,809.60x = 427,818,292,116.48
  5. Step 5: Solve for x
    x = 427,818,292,116.48/580,809.60
  6. Step 6: Final answer
    x = 736,589.57

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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.