Home / 1,131,290.13-1,561,211.18-615,078.78

Finding the Fourth Proportional to 1,131,290.13, 1,561,211.18 and 615,078.78

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Solution

The fourth proportional to 1,131,290.13, 1,561,211.18 and 615,078.78 is: 848,825.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,290.13 : 1,561,211.18 = 615,078.78 : x
  2. Step 2: Convert to fraction form
    1,131,290.13/1,561,211.18 = 615,078.78/x
  3. Step 3: Cross multiply
    1,131,290.13x = 1,561,211.18 × 615,078.78
  4. Step 4: Simplify right side
    1,131,290.13x = 960,267,867,916.76
  5. Step 5: Solve for x
    x = 960,267,867,916.76/1,131,290.13
  6. Step 6: Final answer
    x = 848,825.46

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Double scale
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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.