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Finding the Fourth Proportional to 503,489.90, 755,234.85 and 304,424.30

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Solution

The fourth proportional to 503,489.90, 755,234.85 and 304,424.30 is: 456,636.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,489.90 : 755,234.85 = 304,424.30 : x
  2. Step 2: Convert to fraction form
    503,489.90/755,234.85 = 304,424.30/x
  3. Step 3: Cross multiply
    503,489.90x = 755,234.85 × 304,424.30
  4. Step 4: Simplify right side
    503,489.90x = 229,911,840,546.86
  5. Step 5: Solve for x
    x = 229,911,840,546.86/503,489.90
  6. Step 6: Final answer
    x = 456,636.45

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Half scale
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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.