Home / 515,076.57-772,836.86-278,585.73

Finding the Fourth Proportional to 515,076.57, 772,836.86 and 278,585.73

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Solution

The fourth proportional to 515,076.57, 772,836.86 and 278,585.73 is: 417,998.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,076.57 : 772,836.86 = 278,585.73 : x
  2. Step 2: Convert to fraction form
    515,076.57/772,836.86 = 278,585.73/x
  3. Step 3: Cross multiply
    515,076.57x = 772,836.86 × 278,585.73
  4. Step 4: Simplify right side
    515,076.57x = 215,301,319,421.08
  5. Step 5: Solve for x
    x = 215,301,319,421.08/515,076.57
  6. Step 6: Final answer
    x = 417,998.67

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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.