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Finding the Fourth Proportional to 637,980.53, 880,428.98 and 392,872.50

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Solution

The fourth proportional to 637,980.53, 880,428.98 and 392,872.50 is: 542,173.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,980.53 : 880,428.98 = 392,872.50 : x
  2. Step 2: Convert to fraction form
    637,980.53/880,428.98 = 392,872.50/x
  3. Step 3: Cross multiply
    637,980.53x = 880,428.98 × 392,872.50
  4. Step 4: Simplify right side
    637,980.53x = 345,896,334,445.05
  5. Step 5: Solve for x
    x = 345,896,334,445.05/637,980.53
  6. Step 6: Final answer
    x = 542,173.81

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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.