Home / 1,152,002.20-1,728,003.30-991,643.80

Finding the Fourth Proportional to 1,152,002.20, 1,728,003.30 and 991,643.80

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Solution

The fourth proportional to 1,152,002.20, 1,728,003.30 and 991,643.80 is: 1,487,465.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,002.20 : 1,728,003.30 = 991,643.80 : x
  2. Step 2: Convert to fraction form
    1,152,002.20/1,728,003.30 = 991,643.80/x
  3. Step 3: Cross multiply
    1,152,002.20x = 1,728,003.30 × 991,643.80
  4. Step 4: Simplify right side
    1,152,002.20x = 1,713,563,758,824.54
  5. Step 5: Solve for x
    x = 1,713,563,758,824.54/1,152,002.20
  6. Step 6: Final answer
    x = 1,487,465.70

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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.