Home / 674,258.40-1,011,380.58-389,767.95

Finding the Fourth Proportional to 674,258.40, 1,011,380.58 and 389,767.95

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Solution

The fourth proportional to 674,258.40, 1,011,380.58 and 389,767.95 is: 584,647.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,258.40 : 1,011,380.58 = 389,767.95 : x
  2. Step 2: Convert to fraction form
    674,258.40/1,011,380.58 = 389,767.95/x
  3. Step 3: Cross multiply
    674,258.40x = 1,011,380.58 × 389,767.95
  4. Step 4: Simplify right side
    674,258.40x = 394,203,735,336.41
  5. Step 5: Solve for x
    x = 394,203,735,336.41/674,258.40
  6. Step 6: Final answer
    x = 584,647.87

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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.