Home / 509,485.20-764,227.80-288,301.20

Finding the Fourth Proportional to 509,485.20, 764,227.80 and 288,301.20

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Solution

The fourth proportional to 509,485.20, 764,227.80 and 288,301.20 is: 432,451.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,485.20 : 764,227.80 = 288,301.20 : x
  2. Step 2: Convert to fraction form
    509,485.20/764,227.80 = 288,301.20/x
  3. Step 3: Cross multiply
    509,485.20x = 764,227.80 × 288,301.20
  4. Step 4: Simplify right side
    509,485.20x = 220,327,791,813.36
  5. Step 5: Solve for x
    x = 220,327,791,813.36/509,485.20
  6. Step 6: Final answer
    x = 432,451.80

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Similar ratio
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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.