Home / 642,531.40-886,700.82-356,054.92

Finding the Fourth Proportional to 642,531.40, 886,700.82 and 356,054.92

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Solution

The fourth proportional to 642,531.40, 886,700.82 and 356,054.92 is: 491,359.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,531.40 : 886,700.82 = 356,054.92 : x
  2. Step 2: Convert to fraction form
    642,531.40/886,700.82 = 356,054.92/x
  3. Step 3: Cross multiply
    642,531.40x = 886,700.82 × 356,054.92
  4. Step 4: Simplify right side
    642,531.40x = 315,714,189,529.03
  5. Step 5: Solve for x
    x = 315,714,189,529.03/642,531.40
  6. Step 6: Final answer
    x = 491,359.94

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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.