Home / 876,860.80-1,315,291.20-778,883.20

Finding the Fourth Proportional to 876,860.80, 1,315,291.20 and 778,883.20

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Solution

The fourth proportional to 876,860.80, 1,315,291.20 and 778,883.20 is: 1,168,324.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,860.80 : 1,315,291.20 = 778,883.20 : x
  2. Step 2: Convert to fraction form
    876,860.80/1,315,291.20 = 778,883.20/x
  3. Step 3: Cross multiply
    876,860.80x = 1,315,291.20 × 778,883.20
  4. Step 4: Simplify right side
    876,860.80x = 1,024,458,218,787.84
  5. Step 5: Solve for x
    x = 1,024,458,218,787.84/876,860.80
  6. Step 6: Final answer
    x = 1,168,324.80

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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.