Home / 1,207,187.80-1,808,016.90-615,520.60

Finding the Fourth Proportional to 1,207,187.80, 1,808,016.90 and 615,520.60

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Solution

The fourth proportional to 1,207,187.80, 1,808,016.90 and 615,520.60 is: 921,871.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,187.80 : 1,808,016.90 = 615,520.60 : x
  2. Step 2: Convert to fraction form
    1,207,187.80/1,808,016.90 = 615,520.60/x
  3. Step 3: Cross multiply
    1,207,187.80x = 1,808,016.90 × 615,520.60
  4. Step 4: Simplify right side
    1,207,187.80x = 1,112,871,647,098.14
  5. Step 5: Solve for x
    x = 1,112,871,647,098.14/1,207,187.80
  6. Step 6: Final answer
    x = 921,871.18

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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.