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Finding the Fourth Proportional to 496,951.40, 745,427.10 and 339,487.40

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Solution

The fourth proportional to 496,951.40, 745,427.10 and 339,487.40 is: 509,231.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,951.40 : 745,427.10 = 339,487.40 : x
  2. Step 2: Convert to fraction form
    496,951.40/745,427.10 = 339,487.40/x
  3. Step 3: Cross multiply
    496,951.40x = 745,427.10 × 339,487.40
  4. Step 4: Simplify right side
    496,951.40x = 253,063,108,068.54
  5. Step 5: Solve for x
    x = 253,063,108,068.54/496,951.40
  6. Step 6: Final answer
    x = 509,231.10

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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.