Home / 849,876.80-1,274,968.80-428,091.20

Finding the Fourth Proportional to 849,876.80, 1,274,968.80 and 428,091.20

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Solution

The fourth proportional to 849,876.80, 1,274,968.80 and 428,091.20 is: 642,214.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    849,876.80 : 1,274,968.80 = 428,091.20 : x
  2. Step 2: Convert to fraction form
    849,876.80/1,274,968.80 = 428,091.20/x
  3. Step 3: Cross multiply
    849,876.80x = 1,274,968.80 × 428,091.20
  4. Step 4: Simplify right side
    849,876.80x = 545,802,923,554.56
  5. Step 5: Solve for x
    x = 545,802,923,554.56/849,876.80
  6. Step 6: Final answer
    x = 642,214.17

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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.