Home / 642,694.50-886,947.37-356,196.29

Finding the Fourth Proportional to 642,694.50, 886,947.37 and 356,196.29

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Solution

The fourth proportional to 642,694.50, 886,947.37 and 356,196.29 is: 491,566.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,694.50 : 886,947.37 = 356,196.29 : x
  2. Step 2: Convert to fraction form
    642,694.50/886,947.37 = 356,196.29/x
  3. Step 3: Cross multiply
    642,694.50x = 886,947.37 × 356,196.29
  4. Step 4: Simplify right side
    642,694.50x = 315,927,357,294.03
  5. Step 5: Solve for x
    x = 315,927,357,294.03/642,694.50
  6. Step 6: Final answer
    x = 491,566.92

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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.