Home / 876,858.20-1,315,287.30-212,010.20

Finding the Fourth Proportional to 876,858.20, 1,315,287.30 and 212,010.20

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Solution

The fourth proportional to 876,858.20, 1,315,287.30 and 212,010.20 is: 318,015.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,858.20 : 1,315,287.30 = 212,010.20 : x
  2. Step 2: Convert to fraction form
    876,858.20/1,315,287.30 = 212,010.20/x
  3. Step 3: Cross multiply
    876,858.20x = 1,315,287.30 × 212,010.20
  4. Step 4: Simplify right side
    876,858.20x = 278,854,323,530.46
  5. Step 5: Solve for x
    x = 278,854,323,530.46/876,858.20
  6. Step 6: Final answer
    x = 318,015.30

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1.5x scale

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.