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Finding the Fourth Proportional to 539,038.40, 807,682.80 and 339,000.80

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Solution

The fourth proportional to 539,038.40, 807,682.80 and 339,000.80 is: 507,951.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,038.40 : 807,682.80 = 339,000.80 : x
  2. Step 2: Convert to fraction form
    539,038.40/807,682.80 = 339,000.80/x
  3. Step 3: Cross multiply
    539,038.40x = 807,682.80 × 339,000.80
  4. Step 4: Simplify right side
    539,038.40x = 273,805,115,346.24
  5. Step 5: Solve for x
    x = 273,805,115,346.24/539,038.40
  6. Step 6: Final answer
    x = 507,951.04

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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.