Home / 727,419.80-1,003,800.25-400,722.10

Finding the Fourth Proportional to 727,419.80, 1,003,800.25 and 400,722.10

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Solution

The fourth proportional to 727,419.80, 1,003,800.25 and 400,722.10 is: 552,974.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,419.80 : 1,003,800.25 = 400,722.10 : x
  2. Step 2: Convert to fraction form
    727,419.80/1,003,800.25 = 400,722.10/x
  3. Step 3: Cross multiply
    727,419.80x = 1,003,800.25 × 400,722.10
  4. Step 4: Simplify right side
    727,419.80x = 402,244,944,160.53
  5. Step 5: Solve for x
    x = 402,244,944,160.53/727,419.80
  6. Step 6: Final answer
    x = 552,974.97

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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.