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Finding the Fourth Proportional to 539,069.20, 809,269.40 and 339,389.20

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Solution

The fourth proportional to 539,069.20, 809,269.40 and 339,389.20 is: 509,502.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,069.20 : 809,269.40 = 339,389.20 : x
  2. Step 2: Convert to fraction form
    539,069.20/809,269.40 = 339,389.20/x
  3. Step 3: Cross multiply
    539,069.20x = 809,269.40 × 339,389.20
  4. Step 4: Simplify right side
    539,069.20x = 274,657,294,250.48
  5. Step 5: Solve for x
    x = 274,657,294,250.48/539,069.20
  6. Step 6: Final answer
    x = 509,502.85

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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.