Home / 674,666.80-1,011,352.20-390,065.20

Finding the Fourth Proportional to 674,666.80, 1,011,352.20 and 390,065.20

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Solution

The fourth proportional to 674,666.80, 1,011,352.20 and 390,065.20 is: 584,723.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,666.80 : 1,011,352.20 = 390,065.20 : x
  2. Step 2: Convert to fraction form
    674,666.80/1,011,352.20 = 390,065.20/x
  3. Step 3: Cross multiply
    674,666.80x = 1,011,352.20 × 390,065.20
  4. Step 4: Simplify right side
    674,666.80x = 394,493,298,163.44
  5. Step 5: Solve for x
    x = 394,493,298,163.44/674,666.80
  6. Step 6: Final answer
    x = 584,723.15

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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.