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Finding the Fourth Proportional to 545,806.72, 819,475.20 and 279,758.08

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Solution

The fourth proportional to 545,806.72, 819,475.20 and 279,758.08 is: 420,029.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,806.72 : 819,475.20 = 279,758.08 : x
  2. Step 2: Convert to fraction form
    545,806.72/819,475.20 = 279,758.08/x
  3. Step 3: Cross multiply
    545,806.72x = 819,475.20 × 279,758.08
  4. Step 4: Simplify right side
    545,806.72x = 229,254,808,559.62
  5. Step 5: Solve for x
    x = 229,254,808,559.62/545,806.72
  6. Step 6: Final answer
    x = 420,029.29

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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.