Home / 1,290,923.40-1,781,497.18-717,963.84

Finding the Fourth Proportional to 1,290,923.40, 1,781,497.18 and 717,963.84

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Solution

The fourth proportional to 1,290,923.40, 1,781,497.18 and 717,963.84 is: 990,802.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,923.40 : 1,781,497.18 = 717,963.84 : x
  2. Step 2: Convert to fraction form
    1,290,923.40/1,781,497.18 = 717,963.84/x
  3. Step 3: Cross multiply
    1,290,923.40x = 1,781,497.18 × 717,963.84
  4. Step 4: Simplify right side
    1,290,923.40x = 1,279,050,556,301.97
  5. Step 5: Solve for x
    x = 1,279,050,556,301.97/1,290,923.40
  6. Step 6: Final answer
    x = 990,802.83

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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.