Home / 1,247,762.20-1,871,643.30-680,891.80

Finding the Fourth Proportional to 1,247,762.20, 1,871,643.30 and 680,891.80

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Solution

The fourth proportional to 1,247,762.20, 1,871,643.30 and 680,891.80 is: 1,021,337.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,762.20 : 1,871,643.30 = 680,891.80 : x
  2. Step 2: Convert to fraction form
    1,247,762.20/1,871,643.30 = 680,891.80/x
  3. Step 3: Cross multiply
    1,247,762.20x = 1,871,643.30 × 680,891.80
  4. Step 4: Simplify right side
    1,247,762.20x = 1,274,386,575,494.94
  5. Step 5: Solve for x
    x = 1,274,386,575,494.94/1,247,762.20
  6. Step 6: Final answer
    x = 1,021,337.70

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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.