Home / 721,553.04-1,081,294.08-405,344.40

Finding the Fourth Proportional to 721,553.04, 1,081,294.08 and 405,344.40

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Solution

The fourth proportional to 721,553.04, 1,081,294.08 and 405,344.40 is: 607,434.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,553.04 : 1,081,294.08 = 405,344.40 : x
  2. Step 2: Convert to fraction form
    721,553.04/1,081,294.08 = 405,344.40/x
  3. Step 3: Cross multiply
    721,553.04x = 1,081,294.08 × 405,344.40
  4. Step 4: Simplify right side
    721,553.04x = 438,296,500,081.15
  5. Step 5: Solve for x
    x = 438,296,500,081.15/721,553.04
  6. Step 6: Final answer
    x = 607,434.90

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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.