Home / 721,795.48-996,062.07-399,486.22

Finding the Fourth Proportional to 721,795.48, 996,062.07 and 399,486.22

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Solution

The fourth proportional to 721,795.48, 996,062.07 and 399,486.22 is: 551,282.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,795.48 : 996,062.07 = 399,486.22 : x
  2. Step 2: Convert to fraction form
    721,795.48/996,062.07 = 399,486.22/x
  3. Step 3: Cross multiply
    721,795.48x = 996,062.07 × 399,486.22
  4. Step 4: Simplify right side
    721,795.48x = 397,913,071,229.68
  5. Step 5: Solve for x
    x = 397,913,071,229.68/721,795.48
  6. Step 6: Final answer
    x = 551,282.30

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Double scale
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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.