Home / 687,410.78-1,031,104.82-282,520.94

Finding the Fourth Proportional to 687,410.78, 1,031,104.82 and 282,520.94

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Solution

The fourth proportional to 687,410.78, 1,031,104.82 and 282,520.94 is: 423,776.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,410.78 : 1,031,104.82 = 282,520.94 : x
  2. Step 2: Convert to fraction form
    687,410.78/1,031,104.82 = 282,520.94/x
  3. Step 3: Cross multiply
    687,410.78x = 1,031,104.82 × 282,520.94
  4. Step 4: Simplify right side
    687,410.78x = 291,308,702,984.93
  5. Step 5: Solve for x
    x = 291,308,702,984.93/687,410.78
  6. Step 6: Final answer
    x = 423,776.75

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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.