Home / 766,529.28-1,148,745.60-391,766.40

Finding the Fourth Proportional to 766,529.28, 1,148,745.60 and 391,766.40

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Solution

The fourth proportional to 766,529.28, 1,148,745.60 and 391,766.40 is: 587,113.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,529.28 : 1,148,745.60 = 391,766.40 : x
  2. Step 2: Convert to fraction form
    766,529.28/1,148,745.60 = 391,766.40/x
  3. Step 3: Cross multiply
    766,529.28x = 1,148,745.60 × 391,766.40
  4. Step 4: Simplify right side
    766,529.28x = 450,039,928,227.84
  5. Step 5: Solve for x
    x = 450,039,928,227.84/766,529.28
  6. Step 6: Final answer
    x = 587,113.81

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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.