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Finding the Fourth Proportional to 669,833.12, 924,316.08 and 383,287.52

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Solution

The fourth proportional to 669,833.12, 924,316.08 and 383,287.52 is: 528,906.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,833.12 : 924,316.08 = 383,287.52 : x
  2. Step 2: Convert to fraction form
    669,833.12/924,316.08 = 383,287.52/x
  3. Step 3: Cross multiply
    669,833.12x = 924,316.08 × 383,287.52
  4. Step 4: Simplify right side
    669,833.12x = 354,278,817,999.32
  5. Step 5: Solve for x
    x = 354,278,817,999.32/669,833.12
  6. Step 6: Final answer
    x = 528,906.09

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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.