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Finding the Fourth Proportional to 582,940.80, 874,411.20 and 209,001.60

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Solution

The fourth proportional to 582,940.80, 874,411.20 and 209,001.60 is: 313,502.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,940.80 : 874,411.20 = 209,001.60 : x
  2. Step 2: Convert to fraction form
    582,940.80/874,411.20 = 209,001.60/x
  3. Step 3: Cross multiply
    582,940.80x = 874,411.20 × 209,001.60
  4. Step 4: Simplify right side
    582,940.80x = 182,753,339,857.92
  5. Step 5: Solve for x
    x = 182,753,339,857.92/582,940.80
  6. Step 6: Final answer
    x = 313,502.40

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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.