Home / 1,261,540.80-1,889,200.80-838,526.40

Finding the Fourth Proportional to 1,261,540.80, 1,889,200.80 and 838,526.40

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Solution

The fourth proportional to 1,261,540.80, 1,889,200.80 and 838,526.40 is: 1,255,722.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,540.80 : 1,889,200.80 = 838,526.40 : x
  2. Step 2: Convert to fraction form
    1,261,540.80/1,889,200.80 = 838,526.40/x
  3. Step 3: Cross multiply
    1,261,540.80x = 1,889,200.80 × 838,526.40
  4. Step 4: Simplify right side
    1,261,540.80x = 1,584,144,745,701.12
  5. Step 5: Solve for x
    x = 1,584,144,745,701.12/1,261,540.80
  6. Step 6: Final answer
    x = 1,255,722.17

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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.