Home / 752,172.65-1,128,425.07-278,858.01

Finding the Fourth Proportional to 752,172.65, 1,128,425.07 and 278,858.01

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Solution

The fourth proportional to 752,172.65, 1,128,425.07 and 278,858.01 is: 418,348.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,172.65 : 1,128,425.07 = 278,858.01 : x
  2. Step 2: Convert to fraction form
    752,172.65/1,128,425.07 = 278,858.01/x
  3. Step 3: Cross multiply
    752,172.65x = 1,128,425.07 × 278,858.01
  4. Step 4: Simplify right side
    752,172.65x = 314,670,369,454.31
  5. Step 5: Solve for x
    x = 314,670,369,454.31/752,172.65
  6. Step 6: Final answer
    x = 418,348.60

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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.