Home / 816,114.80-1,223,297.40-310,480.40

Finding the Fourth Proportional to 816,114.80, 1,223,297.40 and 310,480.40

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Solution

The fourth proportional to 816,114.80, 1,223,297.40 and 310,480.40 is: 465,387.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,114.80 : 1,223,297.40 = 310,480.40 : x
  2. Step 2: Convert to fraction form
    816,114.80/1,223,297.40 = 310,480.40/x
  3. Step 3: Cross multiply
    816,114.80x = 1,223,297.40 × 310,480.40
  4. Step 4: Simplify right side
    816,114.80x = 379,809,866,070.96
  5. Step 5: Solve for x
    x = 379,809,866,070.96/816,114.80
  6. Step 6: Final answer
    x = 465,387.79

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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.