Home / 849,175.80-1,272,713.94-428,222.04

Finding the Fourth Proportional to 849,175.80, 1,272,713.94 and 428,222.04

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Solution

The fourth proportional to 849,175.80, 1,272,713.94 and 428,222.04 is: 641,803.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    849,175.80 : 1,272,713.94 = 428,222.04 : x
  2. Step 2: Convert to fraction form
    849,175.80/1,272,713.94 = 428,222.04/x
  3. Step 3: Cross multiply
    849,175.80x = 1,272,713.94 × 428,222.04
  4. Step 4: Simplify right side
    849,175.80x = 545,004,159,723.24
  5. Step 5: Solve for x
    x = 545,004,159,723.24/849,175.80
  6. Step 6: Final answer
    x = 641,803.69

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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.