Home / 1,423,563.20-2,135,344.80-1,288,260.80

Finding the Fourth Proportional to 1,423,563.20, 2,135,344.80 and 1,288,260.80

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Solution

The fourth proportional to 1,423,563.20, 2,135,344.80 and 1,288,260.80 is: 1,932,391.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423,563.20 : 2,135,344.80 = 1,288,260.80 : x
  2. Step 2: Convert to fraction form
    1,423,563.20/2,135,344.80 = 1,288,260.80/x
  3. Step 3: Cross multiply
    1,423,563.20x = 2,135,344.80 × 1,288,260.80
  4. Step 4: Simplify right side
    1,423,563.20x = 2,750,881,000,323.84
  5. Step 5: Solve for x
    x = 2,750,881,000,323.84/1,423,563.20
  6. Step 6: Final answer
    x = 1,932,391.20

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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.