Home / 764,859.87-1,147,125.78-315,464.18

Finding the Fourth Proportional to 764,859.87, 1,147,125.78 and 315,464.18

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Solution

The fourth proportional to 764,859.87, 1,147,125.78 and 315,464.18 is: 473,128.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,859.87 : 1,147,125.78 = 315,464.18 : x
  2. Step 2: Convert to fraction form
    764,859.87/1,147,125.78 = 315,464.18/x
  3. Step 3: Cross multiply
    764,859.87x = 1,147,125.78 × 315,464.18
  4. Step 4: Simplify right side
    764,859.87x = 361,877,087,808.93
  5. Step 5: Solve for x
    x = 361,877,087,808.93/764,859.87
  6. Step 6: Final answer
    x = 473,128.61

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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.