Home / 875,821.20-1,313,731.80-856,138.20

Finding the Fourth Proportional to 875,821.20, 1,313,731.80 and 856,138.20

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Solution

The fourth proportional to 875,821.20, 1,313,731.80 and 856,138.20 is: 1,284,207.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,821.20 : 1,313,731.80 = 856,138.20 : x
  2. Step 2: Convert to fraction form
    875,821.20/1,313,731.80 = 856,138.20/x
  3. Step 3: Cross multiply
    875,821.20x = 1,313,731.80 × 856,138.20
  4. Step 4: Simplify right side
    875,821.20x = 1,124,735,978,534.76
  5. Step 5: Solve for x
    x = 1,124,735,978,534.76/875,821.20
  6. Step 6: Final answer
    x = 1,284,207.30

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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.