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Finding the Fourth Proportional to 520,527.78, 780,780.87 and 165,542.58

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Solution

The fourth proportional to 520,527.78, 780,780.87 and 165,542.58 is: 248,310.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,527.78 : 780,780.87 = 165,542.58 : x
  2. Step 2: Convert to fraction form
    520,527.78/780,780.87 = 165,542.58/x
  3. Step 3: Cross multiply
    520,527.78x = 780,780.87 × 165,542.58
  4. Step 4: Simplify right side
    520,527.78x = 129,252,479,634.45
  5. Step 5: Solve for x
    x = 129,252,479,634.45/520,527.78
  6. Step 6: Final answer
    x = 248,310.44

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1.5x scale

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.