Home / 721,425.92-1,081,103.70-405,217.32

Finding the Fourth Proportional to 721,425.92, 1,081,103.70 and 405,217.32

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Solution

The fourth proportional to 721,425.92, 1,081,103.70 and 405,217.32 is: 607,244.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,425.92 : 1,081,103.70 = 405,217.32 : x
  2. Step 2: Convert to fraction form
    721,425.92/1,081,103.70 = 405,217.32/x
  3. Step 3: Cross multiply
    721,425.92x = 1,081,103.70 × 405,217.32
  4. Step 4: Simplify right side
    721,425.92x = 438,081,943,956.08
  5. Step 5: Solve for x
    x = 438,081,943,956.08/721,425.92
  6. Step 6: Final answer
    x = 607,244.53

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1.5x scale

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.