Home / 3,838,390.70-5,755,660.80-1,278,705.74

Finding the Fourth Proportional to 3,838,390.70, 5,755,660.80 and 1,278,705.74

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Solution

The fourth proportional to 3,838,390.70, 5,755,660.80 and 1,278,705.74 is: 1,917,417.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,838,390.70 : 5,755,660.80 = 1,278,705.74 : x
  2. Step 2: Convert to fraction form
    3,838,390.70/5,755,660.80 = 1,278,705.74/x
  3. Step 3: Cross multiply
    3,838,390.70x = 5,755,660.80 × 1,278,705.74
  4. Step 4: Simplify right side
    3,838,390.70x = 7,359,796,485,964.37
  5. Step 5: Solve for x
    x = 7,359,796,485,964.37/3,838,390.70
  6. Step 6: Final answer
    x = 1,917,417.24

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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.