Home / 721,569.12-1,081,318.08-405,360.48

Finding the Fourth Proportional to 721,569.12, 1,081,318.08 and 405,360.48

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Solution

The fourth proportional to 721,569.12, 1,081,318.08 and 405,360.48 is: 607,458.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,569.12 : 1,081,318.08 = 405,360.48 : x
  2. Step 2: Convert to fraction form
    721,569.12/1,081,318.08 = 405,360.48/x
  3. Step 3: Cross multiply
    721,569.12x = 1,081,318.08 × 405,360.48
  4. Step 4: Simplify right side
    721,569.12x = 438,323,615,941.48
  5. Step 5: Solve for x
    x = 438,323,615,941.48/721,569.12
  6. Step 6: Final answer
    x = 607,458.94

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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.