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Finding the Fourth Proportional to 520,826.02, 780,980.58 and 165,793.90

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Solution

The fourth proportional to 520,826.02, 780,980.58 and 165,793.90 is: 248,608.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,826.02 : 780,980.58 = 165,793.90 : x
  2. Step 2: Convert to fraction form
    520,826.02/780,980.58 = 165,793.90/x
  3. Step 3: Cross multiply
    520,826.02x = 780,980.58 × 165,793.90
  4. Step 4: Simplify right side
    520,826.02x = 129,481,816,182.46
  5. Step 5: Solve for x
    x = 129,481,816,182.46/520,826.02
  6. Step 6: Final answer
    x = 248,608.58

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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.