Home / 751,685.76-1,127,774.40-278,405.76

Finding the Fourth Proportional to 751,685.76, 1,127,774.40 and 278,405.76

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Solution

The fourth proportional to 751,685.76, 1,127,774.40 and 278,405.76 is: 417,699.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    751,685.76 : 1,127,774.40 = 278,405.76 : x
  2. Step 2: Convert to fraction form
    751,685.76/1,127,774.40 = 278,405.76/x
  3. Step 3: Cross multiply
    751,685.76x = 1,127,774.40 × 278,405.76
  4. Step 4: Simplify right side
    751,685.76x = 313,978,888,940.54
  5. Step 5: Solve for x
    x = 313,978,888,940.54/751,685.76
  6. Step 6: Final answer
    x = 417,699.66

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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.