Home / 869,664.80-1,304,497.20-372,000.80

Finding the Fourth Proportional to 869,664.80, 1,304,497.20 and 372,000.80

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Solution

The fourth proportional to 869,664.80, 1,304,497.20 and 372,000.80 is: 558,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,664.80 : 1,304,497.20 = 372,000.80 : x
  2. Step 2: Convert to fraction form
    869,664.80/1,304,497.20 = 372,000.80/x
  3. Step 3: Cross multiply
    869,664.80x = 1,304,497.20 × 372,000.80
  4. Step 4: Simplify right side
    869,664.80x = 485,274,001,997.76
  5. Step 5: Solve for x
    x = 485,274,001,997.76/869,664.80
  6. Step 6: Final answer
    x = 558,001.20

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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.