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Finding the Fourth Proportional to 520,049.60, 780,074.40 and 296,100.80

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Solution

The fourth proportional to 520,049.60, 780,074.40 and 296,100.80 is: 444,151.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,049.60 : 780,074.40 = 296,100.80 : x
  2. Step 2: Convert to fraction form
    520,049.60/780,074.40 = 296,100.80/x
  3. Step 3: Cross multiply
    520,049.60x = 780,074.40 × 296,100.80
  4. Step 4: Simplify right side
    520,049.60x = 230,980,653,899.52
  5. Step 5: Solve for x
    x = 230,980,653,899.52/520,049.60
  6. Step 6: Final answer
    x = 444,151.20

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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.