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Finding the Fourth Proportional to 479,557.60, 661,805.52 and 261,779.20

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Solution

The fourth proportional to 479,557.60, 661,805.52 and 261,779.20 is: 361,264.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,557.60 : 661,805.52 = 261,779.20 : x
  2. Step 2: Convert to fraction form
    479,557.60/661,805.52 = 261,779.20/x
  3. Step 3: Cross multiply
    479,557.60x = 661,805.52 × 261,779.20
  4. Step 4: Simplify right side
    479,557.60x = 173,246,919,581.18
  5. Step 5: Solve for x
    x = 173,246,919,581.18/479,557.60
  6. Step 6: Final answer
    x = 361,264.05

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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.