Home / 876,870.80-1,315,306.20-285,894.80

Finding the Fourth Proportional to 876,870.80, 1,315,306.20 and 285,894.80

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Solution

The fourth proportional to 876,870.80, 1,315,306.20 and 285,894.80 is: 428,842.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,870.80 : 1,315,306.20 = 285,894.80 : x
  2. Step 2: Convert to fraction form
    876,870.80/1,315,306.20 = 285,894.80/x
  3. Step 3: Cross multiply
    876,870.80x = 1,315,306.20 × 285,894.80
  4. Step 4: Simplify right side
    876,870.80x = 376,039,202,987.76
  5. Step 5: Solve for x
    x = 376,039,202,987.76/876,870.80
  6. Step 6: Final answer
    x = 428,842.20

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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.