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Finding the Fourth Proportional to 638,283.20, 957,424.80 and 579,234.20

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Solution

The fourth proportional to 638,283.20, 957,424.80 and 579,234.20 is: 868,851.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,283.20 : 957,424.80 = 579,234.20 : x
  2. Step 2: Convert to fraction form
    638,283.20/957,424.80 = 579,234.20/x
  3. Step 3: Cross multiply
    638,283.20x = 957,424.80 × 579,234.20
  4. Step 4: Simplify right side
    638,283.20x = 554,573,188,088.16
  5. Step 5: Solve for x
    x = 554,573,188,088.16/638,283.20
  6. Step 6: Final answer
    x = 868,851.30

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Similar ratio
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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.