Home / 668,514.78-1,003,078.39-289,551.42

Finding the Fourth Proportional to 668,514.78, 1,003,078.39 and 289,551.42

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Solution

The fourth proportional to 668,514.78, 1,003,078.39 and 289,551.42 is: 434,459.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,514.78 : 1,003,078.39 = 289,551.42 : x
  2. Step 2: Convert to fraction form
    668,514.78/1,003,078.39 = 289,551.42/x
  3. Step 3: Cross multiply
    668,514.78x = 1,003,078.39 × 289,551.42
  4. Step 4: Simplify right side
    668,514.78x = 290,442,772,195.81
  5. Step 5: Solve for x
    x = 290,442,772,195.81/668,514.78
  6. Step 6: Final answer
    x = 434,459.76

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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.