Home / 1,200,540.77-1,656,711.01-656,664.78

Finding the Fourth Proportional to 1,200,540.77, 1,656,711.01 and 656,664.78

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Solution

The fourth proportional to 1,200,540.77, 1,656,711.01 and 656,664.78 is: 906,178.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,540.77 : 1,656,711.01 = 656,664.78 : x
  2. Step 2: Convert to fraction form
    1,200,540.77/1,656,711.01 = 656,664.78/x
  3. Step 3: Cross multiply
    1,200,540.77x = 1,656,711.01 × 656,664.78
  4. Step 4: Simplify right side
    1,200,540.77x = 1,087,903,769,263.57
  5. Step 5: Solve for x
    x = 1,087,903,769,263.57/1,200,540.77
  6. Step 6: Final answer
    x = 906,178.12

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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.