Home / 505,004.40-696,905.28-278,649.72

Finding the Fourth Proportional to 505,004.40, 696,905.28 and 278,649.72

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Solution

The fourth proportional to 505,004.40, 696,905.28 and 278,649.72 is: 384,536.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,004.40 : 696,905.28 = 278,649.72 : x
  2. Step 2: Convert to fraction form
    505,004.40/696,905.28 = 278,649.72/x
  3. Step 3: Cross multiply
    505,004.40x = 696,905.28 × 278,649.72
  4. Step 4: Simplify right side
    505,004.40x = 194,192,461,138.52
  5. Step 5: Solve for x
    x = 194,192,461,138.52/505,004.40
  6. Step 6: Final answer
    x = 384,536.18

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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.