Home / 642,666.96-886,818.38-356,181.30

Finding the Fourth Proportional to 642,666.96, 886,818.38 and 356,181.30

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Solution

The fourth proportional to 642,666.96, 886,818.38 and 356,181.30 is: 491,495.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,666.96 : 886,818.38 = 356,181.30 : x
  2. Step 2: Convert to fraction form
    642,666.96/886,818.38 = 356,181.30/x
  3. Step 3: Cross multiply
    642,666.96x = 886,818.38 × 356,181.30
  4. Step 4: Simplify right side
    642,666.96x = 315,868,121,671.39
  5. Step 5: Solve for x
    x = 315,868,121,671.39/642,666.96
  6. Step 6: Final answer
    x = 491,495.82

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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.