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Finding the Fourth Proportional to 499,497.40, 749,246.10 and 286,046.20

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Solution

The fourth proportional to 499,497.40, 749,246.10 and 286,046.20 is: 429,069.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,497.40 : 749,246.10 = 286,046.20 : x
  2. Step 2: Convert to fraction form
    499,497.40/749,246.10 = 286,046.20/x
  3. Step 3: Cross multiply
    499,497.40x = 749,246.10 × 286,046.20
  4. Step 4: Simplify right side
    499,497.40x = 214,318,999,769.82
  5. Step 5: Solve for x
    x = 214,318,999,769.82/499,497.40
  6. Step 6: Final answer
    x = 429,069.30

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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.