Home / 766,240.70-1,148,327.69-387,428.67

Finding the Fourth Proportional to 766,240.70, 1,148,327.69 and 387,428.67

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Solution

The fourth proportional to 766,240.70, 1,148,327.69 and 387,428.67 is: 580,620.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,240.70 : 1,148,327.69 = 387,428.67 : x
  2. Step 2: Convert to fraction form
    766,240.70/1,148,327.69 = 387,428.67/x
  3. Step 3: Cross multiply
    766,240.70x = 1,148,327.69 × 387,428.67
  4. Step 4: Simplify right side
    766,240.70x = 444,895,067,723.73
  5. Step 5: Solve for x
    x = 444,895,067,723.73/766,240.70
  6. Step 6: Final answer
    x = 580,620.52

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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.