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Finding the Fourth Proportional to 669,917.60, 924,475.80 and 368,105.12

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Solution

The fourth proportional to 669,917.60, 924,475.80 and 368,105.12 is: 507,979.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,917.60 : 924,475.80 = 368,105.12 : x
  2. Step 2: Convert to fraction form
    669,917.60/924,475.80 = 368,105.12/x
  3. Step 3: Cross multiply
    669,917.60x = 924,475.80 × 368,105.12
  4. Step 4: Simplify right side
    669,917.60x = 340,304,275,296.10
  5. Step 5: Solve for x
    x = 340,304,275,296.10/669,917.60
  6. Step 6: Final answer
    x = 507,979.30

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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.