Home / 1,120,291.76-1,680,429-278,837.84

Finding the Fourth Proportional to 1,120,291.76, 1,680,429 and 278,837.84

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Solution

The fourth proportional to 1,120,291.76, 1,680,429 and 278,837.84 is: 418,254.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,291.76 : 1,680,429 = 278,837.84 : x
  2. Step 2: Convert to fraction form
    1,120,291.76/1,680,429 = 278,837.84/x
  3. Step 3: Cross multiply
    1,120,291.76x = 1,680,429 × 278,837.84
  4. Step 4: Simplify right side
    1,120,291.76x = 468,567,192,633.36
  5. Step 5: Solve for x
    x = 468,567,192,633.36/1,120,291.76
  6. Step 6: Final answer
    x = 418,254.61

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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.