Home / 876,871.80-1,315,307.70-285,895.80

Finding the Fourth Proportional to 876,871.80, 1,315,307.70 and 285,895.80

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Solution

The fourth proportional to 876,871.80, 1,315,307.70 and 285,895.80 is: 428,843.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,871.80 : 1,315,307.70 = 285,895.80 : x
  2. Step 2: Convert to fraction form
    876,871.80/1,315,307.70 = 285,895.80/x
  3. Step 3: Cross multiply
    876,871.80x = 1,315,307.70 × 285,895.80
  4. Step 4: Simplify right side
    876,871.80x = 376,040,947,137.66
  5. Step 5: Solve for x
    x = 376,040,947,137.66/876,871.80
  6. Step 6: Final answer
    x = 428,843.70

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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.