Home / 1,278,003.40-1,917,005.10-379,583.80

Finding the Fourth Proportional to 1,278,003.40, 1,917,005.10 and 379,583.80

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Solution

The fourth proportional to 1,278,003.40, 1,917,005.10 and 379,583.80 is: 569,375.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,003.40 : 1,917,005.10 = 379,583.80 : x
  2. Step 2: Convert to fraction form
    1,278,003.40/1,917,005.10 = 379,583.80/x
  3. Step 3: Cross multiply
    1,278,003.40x = 1,917,005.10 × 379,583.80
  4. Step 4: Simplify right side
    1,278,003.40x = 727,664,080,477.38
  5. Step 5: Solve for x
    x = 727,664,080,477.38/1,278,003.40
  6. Step 6: Final answer
    x = 569,375.70

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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.