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Finding the Fourth Proportional to 665,590.20, 998,385.30 and 547,492.20

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Solution

The fourth proportional to 665,590.20, 998,385.30 and 547,492.20 is: 821,238.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,590.20 : 998,385.30 = 547,492.20 : x
  2. Step 2: Convert to fraction form
    665,590.20/998,385.30 = 547,492.20/x
  3. Step 3: Cross multiply
    665,590.20x = 998,385.30 × 547,492.20
  4. Step 4: Simplify right side
    665,590.20x = 546,608,164,344.66
  5. Step 5: Solve for x
    x = 546,608,164,344.66/665,590.20
  6. Step 6: Final answer
    x = 821,238.30

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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.