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Finding the Fourth Proportional to 519,486.90, 779,230.35 and 498,491.70

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Solution

The fourth proportional to 519,486.90, 779,230.35 and 498,491.70 is: 747,737.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,486.90 : 779,230.35 = 498,491.70 : x
  2. Step 2: Convert to fraction form
    519,486.90/779,230.35 = 498,491.70/x
  3. Step 3: Cross multiply
    519,486.90x = 779,230.35 × 498,491.70
  4. Step 4: Simplify right side
    519,486.90x = 388,439,861,863.10
  5. Step 5: Solve for x
    x = 388,439,861,863.10/519,486.90
  6. Step 6: Final answer
    x = 747,737.55

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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.