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Finding the Fourth Proportional to 654,222.80, 980,167.80 and 553,912.40

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Solution

The fourth proportional to 654,222.80, 980,167.80 and 553,912.40 is: 829,881.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,222.80 : 980,167.80 = 553,912.40 : x
  2. Step 2: Convert to fraction form
    654,222.80/980,167.80 = 553,912.40/x
  3. Step 3: Cross multiply
    654,222.80x = 980,167.80 × 553,912.40
  4. Step 4: Simplify right side
    654,222.80x = 542,927,098,500.72
  5. Step 5: Solve for x
    x = 542,927,098,500.72/654,222.80
  6. Step 6: Final answer
    x = 829,881.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.