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Finding the Fourth Proportional to 472,899.20, 707,300.80 and 423,337.60

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Solution

The fourth proportional to 472,899.20, 707,300.80 and 423,337.60 is: 633,173.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,899.20 : 707,300.80 = 423,337.60 : x
  2. Step 2: Convert to fraction form
    472,899.20/707,300.80 = 423,337.60/x
  3. Step 3: Cross multiply
    472,899.20x = 707,300.80 × 423,337.60
  4. Step 4: Simplify right side
    472,899.20x = 299,427,023,150.08
  5. Step 5: Solve for x
    x = 299,427,023,150.08/472,899.20
  6. Step 6: Final answer
    x = 633,173.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.