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Finding the Fourth Proportional to 669,926.55, 924,540 and 383,440.08

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Solution

The fourth proportional to 669,926.55, 924,540 and 383,440.08 is: 529,170.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,926.55 : 924,540 = 383,440.08 : x
  2. Step 2: Convert to fraction form
    669,926.55/924,540 = 383,440.08/x
  3. Step 3: Cross multiply
    669,926.55x = 924,540 × 383,440.08
  4. Step 4: Simplify right side
    669,926.55x = 354,505,691,563.20
  5. Step 5: Solve for x
    x = 354,505,691,563.20/669,926.55
  6. Step 6: Final answer
    x = 529,170.98

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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.