Home / 1,155,643.20-1,731,391.20-989,755.20

Finding the Fourth Proportional to 1,155,643.20, 1,731,391.20 and 989,755.20

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Solution

The fourth proportional to 1,155,643.20, 1,731,391.20 and 989,755.20 is: 1,482,856.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155,643.20 : 1,731,391.20 = 989,755.20 : x
  2. Step 2: Convert to fraction form
    1,155,643.20/1,731,391.20 = 989,755.20/x
  3. Step 3: Cross multiply
    1,155,643.20x = 1,731,391.20 × 989,755.20
  4. Step 4: Simplify right side
    1,155,643.20x = 1,713,653,443,434.24
  5. Step 5: Solve for x
    x = 1,713,653,443,434.24/1,155,643.20
  6. Step 6: Final answer
    x = 1,482,856.86

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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.