Home / 738,186.19-1,018,696.94-398,654.44

Finding the Fourth Proportional to 738,186.19, 1,018,696.94 and 398,654.44

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Solution

The fourth proportional to 738,186.19, 1,018,696.94 and 398,654.44 is: 550,143.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,186.19 : 1,018,696.94 = 398,654.44 : x
  2. Step 2: Convert to fraction form
    738,186.19/1,018,696.94 = 398,654.44/x
  3. Step 3: Cross multiply
    738,186.19x = 1,018,696.94 × 398,654.44
  4. Step 4: Simplify right side
    738,186.19x = 406,108,055,100.35
  5. Step 5: Solve for x
    x = 406,108,055,100.35/738,186.19
  6. Step 6: Final answer
    x = 550,143.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.