Home / 1,328,999.20-1,993,790.40-655,403.20

Finding the Fourth Proportional to 1,328,999.20, 1,993,790.40 and 655,403.20

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Solution

The fourth proportional to 1,328,999.20, 1,993,790.40 and 655,403.20 is: 983,248.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,999.20 : 1,993,790.40 = 655,403.20 : x
  2. Step 2: Convert to fraction form
    1,328,999.20/1,993,790.40 = 655,403.20/x
  3. Step 3: Cross multiply
    1,328,999.20x = 1,993,790.40 × 655,403.20
  4. Step 4: Simplify right side
    1,328,999.20x = 1,306,736,608,289.28
  5. Step 5: Solve for x
    x = 1,306,736,608,289.28/1,328,999.20
  6. Step 6: Final answer
    x = 983,248.60

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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.