Home / 1,985,546.55-2,979,159.80-1,085,938.05

Finding the Fourth Proportional to 1,985,546.55, 2,979,159.80 and 1,085,938.05

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Solution

The fourth proportional to 1,985,546.55, 2,979,159.80 and 1,085,938.05 is: 1,629,366.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985,546.55 : 2,979,159.80 = 1,085,938.05 : x
  2. Step 2: Convert to fraction form
    1,985,546.55/2,979,159.80 = 1,085,938.05/x
  3. Step 3: Cross multiply
    1,985,546.55x = 2,979,159.80 × 1,085,938.05
  4. Step 4: Simplify right side
    1,985,546.55x = 3,235,182,978,420.70
  5. Step 5: Solve for x
    x = 3,235,182,978,420.70/1,985,546.55
  6. Step 6: Final answer
    x = 1,629,366.47

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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.