Home / 1,290,936.95-1,781,556.08-717,964.82

Finding the Fourth Proportional to 1,290,936.95, 1,781,556.08 and 717,964.82

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Solution

The fourth proportional to 1,290,936.95, 1,781,556.08 and 717,964.82 is: 990,826.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,936.95 : 1,781,556.08 = 717,964.82 : x
  2. Step 2: Convert to fraction form
    1,290,936.95/1,781,556.08 = 717,964.82/x
  3. Step 3: Cross multiply
    1,290,936.95x = 1,781,556.08 × 717,964.82
  4. Step 4: Simplify right side
    1,290,936.95x = 1,279,094,577,799.50
  5. Step 5: Solve for x
    x = 1,279,094,577,799.50/1,290,936.95
  6. Step 6: Final answer
    x = 990,826.53

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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.