Home / 764,276.70-1,146,415.05-386,363.10

Finding the Fourth Proportional to 764,276.70, 1,146,415.05 and 386,363.10

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Solution

The fourth proportional to 764,276.70, 1,146,415.05 and 386,363.10 is: 579,544.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,276.70 : 1,146,415.05 = 386,363.10 : x
  2. Step 2: Convert to fraction form
    764,276.70/1,146,415.05 = 386,363.10/x
  3. Step 3: Cross multiply
    764,276.70x = 1,146,415.05 × 386,363.10
  4. Step 4: Simplify right side
    764,276.70x = 442,932,472,604.66
  5. Step 5: Solve for x
    x = 442,932,472,604.66/764,276.70
  6. Step 6: Final answer
    x = 579,544.65

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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.