Home / 637,979.53-880,427.60-392,871.50

Finding the Fourth Proportional to 637,979.53, 880,427.60 and 392,871.50

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Solution

The fourth proportional to 637,979.53, 880,427.60 and 392,871.50 is: 542,172.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,979.53 : 880,427.60 = 392,871.50 : x
  2. Step 2: Convert to fraction form
    637,979.53/880,427.60 = 392,871.50/x
  3. Step 3: Cross multiply
    637,979.53x = 880,427.60 × 392,871.50
  4. Step 4: Simplify right side
    637,979.53x = 345,894,909,889.04
  5. Step 5: Solve for x
    x = 345,894,909,889.04/637,979.53
  6. Step 6: Final answer
    x = 542,172.43

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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.