Home / 642,521.16-886,684.41-356,046.03

Finding the Fourth Proportional to 642,521.16, 886,684.41 and 356,046.03

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Solution

The fourth proportional to 642,521.16, 886,684.41 and 356,046.03 is: 491,346.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,521.16 : 886,684.41 = 356,046.03 : x
  2. Step 2: Convert to fraction form
    642,521.16/886,684.41 = 356,046.03/x
  3. Step 3: Cross multiply
    642,521.16x = 886,684.41 × 356,046.03
  4. Step 4: Simplify right side
    642,521.16x = 315,700,464,043.39
  5. Step 5: Solve for x
    x = 315,700,464,043.39/642,521.16
  6. Step 6: Final answer
    x = 491,346.41

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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.