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Finding the Fourth Proportional to 669,689.76, 924,414.48 and 443,408.16

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Solution

The fourth proportional to 669,689.76, 924,414.48 and 443,408.16 is: 612,063.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,689.76 : 924,414.48 = 443,408.16 : x
  2. Step 2: Convert to fraction form
    669,689.76/924,414.48 = 443,408.16/x
  3. Step 3: Cross multiply
    669,689.76x = 924,414.48 × 443,408.16
  4. Step 4: Simplify right side
    669,689.76x = 409,892,923,654.16
  5. Step 5: Solve for x
    x = 409,892,923,654.16/669,689.76
  6. Step 6: Final answer
    x = 612,063.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.