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Finding the Fourth Proportional to 523,326.80, 784,990.20 and 274,085.20

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Solution

The fourth proportional to 523,326.80, 784,990.20 and 274,085.20 is: 411,127.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,326.80 : 784,990.20 = 274,085.20 : x
  2. Step 2: Convert to fraction form
    523,326.80/784,990.20 = 274,085.20/x
  3. Step 3: Cross multiply
    523,326.80x = 784,990.20 × 274,085.20
  4. Step 4: Simplify right side
    523,326.80x = 215,154,195,965.04
  5. Step 5: Solve for x
    x = 215,154,195,965.04/523,326.80
  6. Step 6: Final answer
    x = 411,127.80

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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.