Home / 859,091.40-1,288,637.10-543,904.20

Finding the Fourth Proportional to 859,091.40, 1,288,637.10 and 543,904.20

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Solution

The fourth proportional to 859,091.40, 1,288,637.10 and 543,904.20 is: 815,856.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,091.40 : 1,288,637.10 = 543,904.20 : x
  2. Step 2: Convert to fraction form
    859,091.40/1,288,637.10 = 543,904.20/x
  3. Step 3: Cross multiply
    859,091.40x = 1,288,637.10 × 543,904.20
  4. Step 4: Simplify right side
    859,091.40x = 700,895,130,965.82
  5. Step 5: Solve for x
    x = 700,895,130,965.82/859,091.40
  6. Step 6: Final answer
    x = 815,856.30

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Similar ratio
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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.