Home / 642,778.02-886,940.52-356,298.06

Finding the Fourth Proportional to 642,778.02, 886,940.52 and 356,298.06

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Solution

The fourth proportional to 642,778.02, 886,940.52 and 356,298.06 is: 491,639.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,778.02 : 886,940.52 = 356,298.06 : x
  2. Step 2: Convert to fraction form
    642,778.02/886,940.52 = 356,298.06/x
  3. Step 3: Cross multiply
    642,778.02x = 886,940.52 × 356,298.06
  4. Step 4: Simplify right side
    642,778.02x = 316,015,186,611.39
  5. Step 5: Solve for x
    x = 316,015,186,611.39/642,778.02
  6. Step 6: Final answer
    x = 491,639.69

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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.