Home / 1,353,292.80-1,867,743-780,221.04

Finding the Fourth Proportional to 1,353,292.80, 1,867,743 and 780,221.04

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Solution

The fourth proportional to 1,353,292.80, 1,867,743 and 780,221.04 is: 1,076,819.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353,292.80 : 1,867,743 = 780,221.04 : x
  2. Step 2: Convert to fraction form
    1,353,292.80/1,867,743 = 780,221.04/x
  3. Step 3: Cross multiply
    1,353,292.80x = 1,867,743 × 780,221.04
  4. Step 4: Simplify right side
    1,353,292.80x = 1,457,252,385,912.72
  5. Step 5: Solve for x
    x = 1,457,252,385,912.72/1,353,292.80
  6. Step 6: Final answer
    x = 1,076,819.73

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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.