Home / 1,434,671.60-1,979,120.40-891,129.20

Finding the Fourth Proportional to 1,434,671.60, 1,979,120.40 and 891,129.20

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Solution

The fourth proportional to 1,434,671.60, 1,979,120.40 and 891,129.20 is: 1,229,307.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434,671.60 : 1,979,120.40 = 891,129.20 : x
  2. Step 2: Convert to fraction form
    1,434,671.60/1,979,120.40 = 891,129.20/x
  3. Step 3: Cross multiply
    1,434,671.60x = 1,979,120.40 × 891,129.20
  4. Step 4: Simplify right side
    1,434,671.60x = 1,763,651,978,755.68
  5. Step 5: Solve for x
    x = 1,763,651,978,755.68/1,434,671.60
  6. Step 6: Final answer
    x = 1,229,307.10

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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.