Home / 681,655.18-940,686.02-409,878.72

Finding the Fourth Proportional to 681,655.18, 940,686.02 and 409,878.72

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Solution

The fourth proportional to 681,655.18, 940,686.02 and 409,878.72 is: 565,633.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,655.18 : 940,686.02 = 409,878.72 : x
  2. Step 2: Convert to fraction form
    681,655.18/940,686.02 = 409,878.72/x
  3. Step 3: Cross multiply
    681,655.18x = 940,686.02 × 409,878.72
  4. Step 4: Simplify right side
    681,655.18x = 385,567,181,799.49
  5. Step 5: Solve for x
    x = 385,567,181,799.49/681,655.18
  6. Step 6: Final answer
    x = 565,633.76

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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.