Home / 781,280.21-1,078,160.86-441,760.61

Finding the Fourth Proportional to 781,280.21, 1,078,160.86 and 441,760.61

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Solution

The fourth proportional to 781,280.21, 1,078,160.86 and 441,760.61 is: 609,626.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,280.21 : 1,078,160.86 = 441,760.61 : x
  2. Step 2: Convert to fraction form
    781,280.21/1,078,160.86 = 441,760.61/x
  3. Step 3: Cross multiply
    781,280.21x = 1,078,160.86 × 441,760.61
  4. Step 4: Simplify right side
    781,280.21x = 476,289,002,439.33
  5. Step 5: Solve for x
    x = 476,289,002,439.33/781,280.21
  6. Step 6: Final answer
    x = 609,626.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.