Home / 1,638,000.90-2,456,017.20-840,839.40

Finding the Fourth Proportional to 1,638,000.90, 2,456,017.20 and 840,839.40

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Solution

The fourth proportional to 1,638,000.90, 2,456,017.20 and 840,839.40 is: 1,260,753.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,000.90 : 2,456,017.20 = 840,839.40 : x
  2. Step 2: Convert to fraction form
    1,638,000.90/2,456,017.20 = 840,839.40/x
  3. Step 3: Cross multiply
    1,638,000.90x = 2,456,017.20 × 840,839.40
  4. Step 4: Simplify right side
    1,638,000.90x = 2,065,116,028,837.68
  5. Step 5: Solve for x
    x = 2,065,116,028,837.68/1,638,000.90
  6. Step 6: Final answer
    x = 1,260,753.90

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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.