Home / 815,531.80-1,223,297.70-647,570.20

Finding the Fourth Proportional to 815,531.80, 1,223,297.70 and 647,570.20

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Solution

The fourth proportional to 815,531.80, 1,223,297.70 and 647,570.20 is: 971,355.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,531.80 : 1,223,297.70 = 647,570.20 : x
  2. Step 2: Convert to fraction form
    815,531.80/1,223,297.70 = 647,570.20/x
  3. Step 3: Cross multiply
    815,531.80x = 1,223,297.70 × 647,570.20
  4. Step 4: Simplify right side
    815,531.80x = 792,171,136,248.54
  5. Step 5: Solve for x
    x = 792,171,136,248.54/815,531.80
  6. Step 6: Final answer
    x = 971,355.30

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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.