Home / 891,115.22-1,230,216.86-688,216.30

Finding the Fourth Proportional to 891,115.22, 1,230,216.86 and 688,216.30

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Solution

The fourth proportional to 891,115.22, 1,230,216.86 and 688,216.30 is: 950,107.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,115.22 : 1,230,216.86 = 688,216.30 : x
  2. Step 2: Convert to fraction form
    891,115.22/1,230,216.86 = 688,216.30/x
  3. Step 3: Cross multiply
    891,115.22x = 1,230,216.86 × 688,216.30
  4. Step 4: Simplify right side
    891,115.22x = 846,655,294,231.82
  5. Step 5: Solve for x
    x = 846,655,294,231.82/891,115.22
  6. Step 6: Final answer
    x = 950,107.54

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1.5x scale

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.