Home / 840,859.50-1,160,410.71-458,910.78

Finding the Fourth Proportional to 840,859.50, 1,160,410.71 and 458,910.78

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Solution

The fourth proportional to 840,859.50, 1,160,410.71 and 458,910.78 is: 633,310.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,859.50 : 1,160,410.71 = 458,910.78 : x
  2. Step 2: Convert to fraction form
    840,859.50/1,160,410.71 = 458,910.78/x
  3. Step 3: Cross multiply
    840,859.50x = 1,160,410.71 × 458,910.78
  4. Step 4: Simplify right side
    840,859.50x = 532,524,984,046.45
  5. Step 5: Solve for x
    x = 532,524,984,046.45/840,859.50
  6. Step 6: Final answer
    x = 633,310.30

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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.