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Finding the Fourth Proportional to 658,387.10, 987,908.70 and 374,295.80

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Solution

The fourth proportional to 658,387.10, 987,908.70 and 374,295.80 is: 561,630.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,387.10 : 987,908.70 = 374,295.80 : x
  2. Step 2: Convert to fraction form
    658,387.10/987,908.70 = 374,295.80/x
  3. Step 3: Cross multiply
    658,387.10x = 987,908.70 × 374,295.80
  4. Step 4: Simplify right side
    658,387.10x = 369,770,077,193.46
  5. Step 5: Solve for x
    x = 369,770,077,193.46/658,387.10
  6. Step 6: Final answer
    x = 561,630.20

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1.5x scale

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.