Home / 509,560.20-764,340.30-288,376.20

Finding the Fourth Proportional to 509,560.20, 764,340.30 and 288,376.20

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Solution

The fourth proportional to 509,560.20, 764,340.30 and 288,376.20 is: 432,564.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,560.20 : 764,340.30 = 288,376.20 : x
  2. Step 2: Convert to fraction form
    509,560.20/764,340.30 = 288,376.20/x
  3. Step 3: Cross multiply
    509,560.20x = 764,340.30 × 288,376.20
  4. Step 4: Simplify right side
    509,560.20x = 220,417,551,220.86
  5. Step 5: Solve for x
    x = 220,417,551,220.86/509,560.20
  6. Step 6: Final answer
    x = 432,564.30

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Double scale
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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.