Home / 642,563.30-886,742.50-356,088.14

Finding the Fourth Proportional to 642,563.30, 886,742.50 and 356,088.14

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Solution

The fourth proportional to 642,563.30, 886,742.50 and 356,088.14 is: 491,404.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,563.30 : 886,742.50 = 356,088.14 : x
  2. Step 2: Convert to fraction form
    642,563.30/886,742.50 = 356,088.14/x
  3. Step 3: Cross multiply
    642,563.30x = 886,742.50 × 356,088.14
  4. Step 4: Simplify right side
    642,563.30x = 315,758,487,483.95
  5. Step 5: Solve for x
    x = 315,758,487,483.95/642,563.30
  6. Step 6: Final answer
    x = 491,404.48

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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.