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Finding the Fourth Proportional to 492,065.90, 738,098.85 and 487,918.70

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Solution

The fourth proportional to 492,065.90, 738,098.85 and 487,918.70 is: 731,878.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,065.90 : 738,098.85 = 487,918.70 : x
  2. Step 2: Convert to fraction form
    492,065.90/738,098.85 = 487,918.70/x
  3. Step 3: Cross multiply
    492,065.90x = 738,098.85 × 487,918.70
  4. Step 4: Simplify right side
    492,065.90x = 360,132,231,363.50
  5. Step 5: Solve for x
    x = 360,132,231,363.50/492,065.90
  6. Step 6: Final answer
    x = 731,878.05

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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.