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Finding the Fourth Proportional to 492,776.80, 739,165.20 and 442,913.20

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Solution

The fourth proportional to 492,776.80, 739,165.20 and 442,913.20 is: 664,369.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,776.80 : 739,165.20 = 442,913.20 : x
  2. Step 2: Convert to fraction form
    492,776.80/739,165.20 = 442,913.20/x
  3. Step 3: Cross multiply
    492,776.80x = 739,165.20 × 442,913.20
  4. Step 4: Simplify right side
    492,776.80x = 327,386,024,060.64
  5. Step 5: Solve for x
    x = 327,386,024,060.64/492,776.80
  6. Step 6: Final answer
    x = 664,369.80

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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.