Home / 505,023.76-696,935.16-278,669.20

Finding the Fourth Proportional to 505,023.76, 696,935.16 and 278,669.20

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Solution

The fourth proportional to 505,023.76, 696,935.16 and 278,669.20 is: 384,564.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,023.76 : 696,935.16 = 278,669.20 : x
  2. Step 2: Convert to fraction form
    505,023.76/696,935.16 = 278,669.20/x
  3. Step 3: Cross multiply
    505,023.76x = 696,935.16 × 278,669.20
  4. Step 4: Simplify right side
    505,023.76x = 194,214,363,489.07
  5. Step 5: Solve for x
    x = 194,214,363,489.07/505,023.76
  6. Step 6: Final answer
    x = 384,564.80

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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.