Home / 721,492.92-1,081,204.20-405,284.31

Finding the Fourth Proportional to 721,492.92, 1,081,204.20 and 405,284.31

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Solution

The fourth proportional to 721,492.92, 1,081,204.20 and 405,284.31 is: 607,344.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,492.92 : 1,081,204.20 = 405,284.31 : x
  2. Step 2: Convert to fraction form
    721,492.92/1,081,204.20 = 405,284.31/x
  3. Step 3: Cross multiply
    721,492.92x = 1,081,204.20 × 405,284.31
  4. Step 4: Simplify right side
    721,492.92x = 438,195,098,166.10
  5. Step 5: Solve for x
    x = 438,195,098,166.10/721,492.92
  6. Step 6: Final answer
    x = 607,344.97

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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.