Home / 1,190,099-1,785,144.86-431,939.46

Finding the Fourth Proportional to 1,190,099, 1,785,144.86 and 431,939.46

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Solution

The fourth proportional to 1,190,099, 1,785,144.86 and 431,939.46 is: 647,907.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190,099 : 1,785,144.86 = 431,939.46 : x
  2. Step 2: Convert to fraction form
    1,190,099/1,785,144.86 = 431,939.46/x
  3. Step 3: Cross multiply
    1,190,099x = 1,785,144.86 × 431,939.46
  4. Step 4: Simplify right side
    1,190,099x = 771,074,506,850.18
  5. Step 5: Solve for x
    x = 771,074,506,850.18/1,190,099
  6. Step 6: Final answer
    x = 647,907.87

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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.