Home / 874,694.80-1,312,042.20-663,187.60

Finding the Fourth Proportional to 874,694.80, 1,312,042.20 and 663,187.60

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Solution

The fourth proportional to 874,694.80, 1,312,042.20 and 663,187.60 is: 994,781.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,694.80 : 1,312,042.20 = 663,187.60 : x
  2. Step 2: Convert to fraction form
    874,694.80/1,312,042.20 = 663,187.60/x
  3. Step 3: Cross multiply
    874,694.80x = 1,312,042.20 × 663,187.60
  4. Step 4: Simplify right side
    874,694.80x = 870,130,117,716.72
  5. Step 5: Solve for x
    x = 870,130,117,716.72/874,694.80
  6. Step 6: Final answer
    x = 994,781.40

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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.