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Finding the Fourth Proportional to 588,000.80, 882,001.20 and 428,592.80

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Solution

The fourth proportional to 588,000.80, 882,001.20 and 428,592.80 is: 642,889.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    588,000.80 : 882,001.20 = 428,592.80 : x
  2. Step 2: Convert to fraction form
    588,000.80/882,001.20 = 428,592.80/x
  3. Step 3: Cross multiply
    588,000.80x = 882,001.20 × 428,592.80
  4. Step 4: Simplify right side
    588,000.80x = 378,019,363,911.36
  5. Step 5: Solve for x
    x = 378,019,363,911.36/588,000.80
  6. Step 6: Final answer
    x = 642,889.20

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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.