Home / 999,020.80-1,498,531.20-621,107.20

Finding the Fourth Proportional to 999,020.80, 1,498,531.20 and 621,107.20

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Solution

The fourth proportional to 999,020.80, 1,498,531.20 and 621,107.20 is: 931,660.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,020.80 : 1,498,531.20 = 621,107.20 : x
  2. Step 2: Convert to fraction form
    999,020.80/1,498,531.20 = 621,107.20/x
  3. Step 3: Cross multiply
    999,020.80x = 1,498,531.20 × 621,107.20
  4. Step 4: Simplify right side
    999,020.80x = 930,748,517,744.64
  5. Step 5: Solve for x
    x = 930,748,517,744.64/999,020.80
  6. Step 6: Final answer
    x = 931,660.80

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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.