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Finding the Fourth Proportional to 545,912.10, 818,868.15 and 498,672.90

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Solution

The fourth proportional to 545,912.10, 818,868.15 and 498,672.90 is: 748,009.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,912.10 : 818,868.15 = 498,672.90 : x
  2. Step 2: Convert to fraction form
    545,912.10/818,868.15 = 498,672.90/x
  3. Step 3: Cross multiply
    545,912.10x = 818,868.15 × 498,672.90
  4. Step 4: Simplify right side
    545,912.10x = 408,347,355,078.14
  5. Step 5: Solve for x
    x = 408,347,355,078.14/545,912.10
  6. Step 6: Final answer
    x = 748,009.35

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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.