Home / 876,780.80-1,314,782.40-403,611.20

Finding the Fourth Proportional to 876,780.80, 1,314,782.40 and 403,611.20

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Solution

The fourth proportional to 876,780.80, 1,314,782.40 and 403,611.20 is: 605,237.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,780.80 : 1,314,782.40 = 403,611.20 : x
  2. Step 2: Convert to fraction form
    876,780.80/1,314,782.40 = 403,611.20/x
  3. Step 3: Cross multiply
    876,780.80x = 1,314,782.40 × 403,611.20
  4. Step 4: Simplify right side
    876,780.80x = 530,660,902,202.88
  5. Step 5: Solve for x
    x = 530,660,902,202.88/876,780.80
  6. Step 6: Final answer
    x = 605,237.82

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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.