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Finding the Fourth Proportional to 516,793.20, 775,189.80 and 492,298.80

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Solution

The fourth proportional to 516,793.20, 775,189.80 and 492,298.80 is: 738,448.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,793.20 : 775,189.80 = 492,298.80 : x
  2. Step 2: Convert to fraction form
    516,793.20/775,189.80 = 492,298.80/x
  3. Step 3: Cross multiply
    516,793.20x = 775,189.80 × 492,298.80
  4. Step 4: Simplify right side
    516,793.20x = 381,625,008,312.24
  5. Step 5: Solve for x
    x = 381,625,008,312.24/516,793.20
  6. Step 6: Final answer
    x = 738,448.20

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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.