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Finding the Fourth Proportional to 520,360.20, 780,627.78 and 165,346.92

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Solution

The fourth proportional to 520,360.20, 780,627.78 and 165,346.92 is: 248,048.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,360.20 : 780,627.78 = 165,346.92 : x
  2. Step 2: Convert to fraction form
    520,360.20/780,627.78 = 165,346.92/x
  3. Step 3: Cross multiply
    520,360.20x = 780,627.78 × 165,346.92
  4. Step 4: Simplify right side
    520,360.20x = 129,074,399,089.44
  5. Step 5: Solve for x
    x = 129,074,399,089.44/520,360.20
  6. Step 6: Final answer
    x = 248,048.18

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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.