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Finding the Fourth Proportional to 581,372.80, 869,985.60 and 403,043.20

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Solution

The fourth proportional to 581,372.80, 869,985.60 and 403,043.20 is: 603,127.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,372.80 : 869,985.60 = 403,043.20 : x
  2. Step 2: Convert to fraction form
    581,372.80/869,985.60 = 403,043.20/x
  3. Step 3: Cross multiply
    581,372.80x = 869,985.60 × 403,043.20
  4. Step 4: Simplify right side
    581,372.80x = 350,641,780,177.92
  5. Step 5: Solve for x
    x = 350,641,780,177.92/581,372.80
  6. Step 6: Final answer
    x = 603,127.25

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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.