Home / 1,293,981.92-1,785,670.98-721,009.88

Finding the Fourth Proportional to 1,293,981.92, 1,785,670.98 and 721,009.88

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Solution

The fourth proportional to 1,293,981.92, 1,785,670.98 and 721,009.88 is: 994,980.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,981.92 : 1,785,670.98 = 721,009.88 : x
  2. Step 2: Convert to fraction form
    1,293,981.92/1,785,670.98 = 721,009.88/x
  3. Step 3: Cross multiply
    1,293,981.92x = 1,785,670.98 × 721,009.88
  4. Step 4: Simplify right side
    1,293,981.92x = 1,287,486,419,009.28
  5. Step 5: Solve for x
    x = 1,287,486,419,009.28/1,293,981.92
  6. Step 6: Final answer
    x = 994,980.22

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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.