Home / 751,688.76-1,127,778.90-278,408.76

Finding the Fourth Proportional to 751,688.76, 1,127,778.90 and 278,408.76

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Solution

The fourth proportional to 751,688.76, 1,127,778.90 and 278,408.76 is: 417,704.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    751,688.76 : 1,127,778.90 = 278,408.76 : x
  2. Step 2: Convert to fraction form
    751,688.76/1,127,778.90 = 278,408.76/x
  3. Step 3: Cross multiply
    751,688.76x = 1,127,778.90 × 278,408.76
  4. Step 4: Simplify right side
    751,688.76x = 313,983,525,103.16
  5. Step 5: Solve for x
    x = 313,983,525,103.16/751,688.76
  6. Step 6: Final answer
    x = 417,704.16

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1.5x scale

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.