Home / 821,087.40-1,231,631.10-539,077.80

Finding the Fourth Proportional to 821,087.40, 1,231,631.10 and 539,077.80

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Solution

The fourth proportional to 821,087.40, 1,231,631.10 and 539,077.80 is: 808,616.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,087.40 : 1,231,631.10 = 539,077.80 : x
  2. Step 2: Convert to fraction form
    821,087.40/1,231,631.10 = 539,077.80/x
  3. Step 3: Cross multiply
    821,087.40x = 1,231,631.10 × 539,077.80
  4. Step 4: Simplify right side
    821,087.40x = 663,944,983,799.58
  5. Step 5: Solve for x
    x = 663,944,983,799.58/821,087.40
  6. Step 6: Final answer
    x = 808,616.70

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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.