Home / 705,761.40-1,055,726.10-643,475.64

Finding the Fourth Proportional to 705,761.40, 1,055,726.10 and 643,475.64

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Solution

The fourth proportional to 705,761.40, 1,055,726.10 and 643,475.64 is: 962,554.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,761.40 : 1,055,726.10 = 643,475.64 : x
  2. Step 2: Convert to fraction form
    705,761.40/1,055,726.10 = 643,475.64/x
  3. Step 3: Cross multiply
    705,761.40x = 1,055,726.10 × 643,475.64
  4. Step 4: Simplify right side
    705,761.40x = 679,334,027,862.20
  5. Step 5: Solve for x
    x = 679,334,027,862.20/705,761.40
  6. Step 6: Final answer
    x = 962,554.81

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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.