Home / 1,638,540-2,260,259.10-1,025,628.80

Finding the Fourth Proportional to 1,638,540, 2,260,259.10 and 1,025,628.80

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Solution

The fourth proportional to 1,638,540, 2,260,259.10 and 1,025,628.80 is: 1,414,788.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,540 : 2,260,259.10 = 1,025,628.80 : x
  2. Step 2: Convert to fraction form
    1,638,540/2,260,259.10 = 1,025,628.80/x
  3. Step 3: Cross multiply
    1,638,540x = 2,260,259.10 × 1,025,628.80
  4. Step 4: Simplify right side
    1,638,540x = 2,318,186,817,120.78
  5. Step 5: Solve for x
    x = 2,318,186,817,120.78/1,638,540
  6. Step 6: Final answer
    x = 1,414,788.05

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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.