Home / 727,471.38-1,003,870.62-400,720.35

Finding the Fourth Proportional to 727,471.38, 1,003,870.62 and 400,720.35

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Solution

The fourth proportional to 727,471.38, 1,003,870.62 and 400,720.35 is: 552,972.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,471.38 : 1,003,870.62 = 400,720.35 : x
  2. Step 2: Convert to fraction form
    727,471.38/1,003,870.62 = 400,720.35/x
  3. Step 3: Cross multiply
    727,471.38x = 1,003,870.62 × 400,720.35
  4. Step 4: Simplify right side
    727,471.38x = 402,271,386,201.12
  5. Step 5: Solve for x
    x = 402,271,386,201.12/727,471.38
  6. Step 6: Final answer
    x = 552,972.11

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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.