Home / 642,541.18-886,712.08-356,066.05

Finding the Fourth Proportional to 642,541.18, 886,712.08 and 356,066.05

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Solution

The fourth proportional to 642,541.18, 886,712.08 and 356,066.05 is: 491,374.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,541.18 : 886,712.08 = 356,066.05 : x
  2. Step 2: Convert to fraction form
    642,541.18/886,712.08 = 356,066.05/x
  3. Step 3: Cross multiply
    642,541.18x = 886,712.08 × 356,066.05
  4. Step 4: Simplify right side
    642,541.18x = 315,728,067,812.88
  5. Step 5: Solve for x
    x = 315,728,067,812.88/642,541.18
  6. Step 6: Final answer
    x = 491,374.06

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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.