Home / 1,295,165.60-1,942,748.40-820,440.80

Finding the Fourth Proportional to 1,295,165.60, 1,942,748.40 and 820,440.80

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Solution

The fourth proportional to 1,295,165.60, 1,942,748.40 and 820,440.80 is: 1,230,661.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,165.60 : 1,942,748.40 = 820,440.80 : x
  2. Step 2: Convert to fraction form
    1,295,165.60/1,942,748.40 = 820,440.80/x
  3. Step 3: Cross multiply
    1,295,165.60x = 1,942,748.40 × 820,440.80
  4. Step 4: Simplify right side
    1,295,165.60x = 1,593,910,051,494.72
  5. Step 5: Solve for x
    x = 1,593,910,051,494.72/1,295,165.60
  6. Step 6: Final answer
    x = 1,230,661.20

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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.