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Finding the Fourth Proportional to 523,048.50, 784,572.75 and 129,064.50

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Solution

The fourth proportional to 523,048.50, 784,572.75 and 129,064.50 is: 193,596.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,048.50 : 784,572.75 = 129,064.50 : x
  2. Step 2: Convert to fraction form
    523,048.50/784,572.75 = 129,064.50/x
  3. Step 3: Cross multiply
    523,048.50x = 784,572.75 × 129,064.50
  4. Step 4: Simplify right side
    523,048.50x = 101,260,489,692.38
  5. Step 5: Solve for x
    x = 101,260,489,692.38/523,048.50
  6. Step 6: Final answer
    x = 193,596.75

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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.