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Finding the Fourth Proportional to 669,766.79, 924,310.28 and 411,655

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Solution

The fourth proportional to 669,766.79, 924,310.28 and 411,655 is: 568,103.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,766.79 : 924,310.28 = 411,655 : x
  2. Step 2: Convert to fraction form
    669,766.79/924,310.28 = 411,655/x
  3. Step 3: Cross multiply
    669,766.79x = 924,310.28 × 411,655
  4. Step 4: Simplify right side
    669,766.79x = 380,496,948,313.40
  5. Step 5: Solve for x
    x = 380,496,948,313.40/669,766.79
  6. Step 6: Final answer
    x = 568,103.64

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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.