Home / 1,247,542.80-1,871,314.20-680,672.40

Finding the Fourth Proportional to 1,247,542.80, 1,871,314.20 and 680,672.40

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Solution

The fourth proportional to 1,247,542.80, 1,871,314.20 and 680,672.40 is: 1,021,008.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,542.80 : 1,871,314.20 = 680,672.40 : x
  2. Step 2: Convert to fraction form
    1,247,542.80/1,871,314.20 = 680,672.40/x
  3. Step 3: Cross multiply
    1,247,542.80x = 1,871,314.20 × 680,672.40
  4. Step 4: Simplify right side
    1,247,542.80x = 1,273,751,927,668.08
  5. Step 5: Solve for x
    x = 1,273,751,927,668.08/1,247,542.80
  6. Step 6: Final answer
    x = 1,021,008.60

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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.