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Finding the Fourth Proportional to 492,079.90, 738,119.85 and 487,932.70

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Solution

The fourth proportional to 492,079.90, 738,119.85 and 487,932.70 is: 731,899.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,079.90 : 738,119.85 = 487,932.70 : x
  2. Step 2: Convert to fraction form
    492,079.90/738,119.85 = 487,932.70/x
  3. Step 3: Cross multiply
    492,079.90x = 738,119.85 × 487,932.70
  4. Step 4: Simplify right side
    492,079.90x = 360,152,811,334.10
  5. Step 5: Solve for x
    x = 360,152,811,334.10/492,079.90
  6. Step 6: Final answer
    x = 731,899.05

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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.