Home / 1,190,755.20-1,643,253.72-646,895.28

Finding the Fourth Proportional to 1,190,755.20, 1,643,253.72 and 646,895.28

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Solution

The fourth proportional to 1,190,755.20, 1,643,253.72 and 646,895.28 is: 892,721.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190,755.20 : 1,643,253.72 = 646,895.28 : x
  2. Step 2: Convert to fraction form
    1,190,755.20/1,643,253.72 = 646,895.28/x
  3. Step 3: Cross multiply
    1,190,755.20x = 1,643,253.72 × 646,895.28
  4. Step 4: Simplify right side
    1,190,755.20x = 1,063,013,075,310.44
  5. Step 5: Solve for x
    x = 1,063,013,075,310.44/1,190,755.20
  6. Step 6: Final answer
    x = 892,721.76

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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.