Home / 764,145.10-1,146,217.65-409,851.10

Finding the Fourth Proportional to 764,145.10, 1,146,217.65 and 409,851.10

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Solution

The fourth proportional to 764,145.10, 1,146,217.65 and 409,851.10 is: 614,776.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,145.10 : 1,146,217.65 = 409,851.10 : x
  2. Step 2: Convert to fraction form
    764,145.10/1,146,217.65 = 409,851.10/x
  3. Step 3: Cross multiply
    764,145.10x = 1,146,217.65 × 409,851.10
  4. Step 4: Simplify right side
    764,145.10x = 469,778,564,691.92
  5. Step 5: Solve for x
    x = 469,778,564,691.92/764,145.10
  6. Step 6: Final answer
    x = 614,776.65

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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.