Home / 1,187,074.88-1,638,863.52-779,888.24

Finding the Fourth Proportional to 1,187,074.88, 1,638,863.52 and 779,888.24

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Solution

The fourth proportional to 1,187,074.88, 1,638,863.52 and 779,888.24 is: 1,076,705.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,074.88 : 1,638,863.52 = 779,888.24 : x
  2. Step 2: Convert to fraction form
    1,187,074.88/1,638,863.52 = 779,888.24/x
  3. Step 3: Cross multiply
    1,187,074.88x = 1,638,863.52 × 779,888.24
  4. Step 4: Simplify right side
    1,187,074.88x = 1,278,130,386,213.00
  5. Step 5: Solve for x
    x = 1,278,130,386,213.00/1,187,074.88
  6. Step 6: Final answer
    x = 1,076,705.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.