Home / 642,775.02-886,936.38-356,295.06

Finding the Fourth Proportional to 642,775.02, 886,936.38 and 356,295.06

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Solution

The fourth proportional to 642,775.02, 886,936.38 and 356,295.06 is: 491,635.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,775.02 : 886,936.38 = 356,295.06 : x
  2. Step 2: Convert to fraction form
    642,775.02/886,936.38 = 356,295.06/x
  3. Step 3: Cross multiply
    642,775.02x = 886,936.38 × 356,295.06
  4. Step 4: Simplify right side
    642,775.02x = 316,011,050,728.28
  5. Step 5: Solve for x
    x = 316,011,050,728.28/642,775.02
  6. Step 6: Final answer
    x = 491,635.55

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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.