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Finding the Fourth Proportional to 658,046.80, 987,070.20 and 500,582.80

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Solution

The fourth proportional to 658,046.80, 987,070.20 and 500,582.80 is: 750,874.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,046.80 : 987,070.20 = 500,582.80 : x
  2. Step 2: Convert to fraction form
    658,046.80/987,070.20 = 500,582.80/x
  3. Step 3: Cross multiply
    658,046.80x = 987,070.20 × 500,582.80
  4. Step 4: Simplify right side
    658,046.80x = 494,110,364,512.56
  5. Step 5: Solve for x
    x = 494,110,364,512.56/658,046.80
  6. Step 6: Final answer
    x = 750,874.20

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Double scale
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Similar ratio
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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.