Home / 980,620.90-1,350,128.55-836,803.78

Finding the Fourth Proportional to 980,620.90, 1,350,128.55 and 836,803.78

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Solution

The fourth proportional to 980,620.90, 1,350,128.55 and 836,803.78 is: 1,152,119.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,620.90 : 1,350,128.55 = 836,803.78 : x
  2. Step 2: Convert to fraction form
    980,620.90/1,350,128.55 = 836,803.78/x
  3. Step 3: Cross multiply
    980,620.90x = 1,350,128.55 × 836,803.78
  4. Step 4: Simplify right side
    980,620.90x = 1,129,792,673,888.61
  5. Step 5: Solve for x
    x = 1,129,792,673,888.61/980,620.90
  6. Step 6: Final answer
    x = 1,152,119.72

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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.