Home / 687,603.78-1,031,616.90-328,233.24

Finding the Fourth Proportional to 687,603.78, 1,031,616.90 and 328,233.24

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Solution

The fourth proportional to 687,603.78, 1,031,616.90 and 328,233.24 is: 492,450.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,603.78 : 1,031,616.90 = 328,233.24 : x
  2. Step 2: Convert to fraction form
    687,603.78/1,031,616.90 = 328,233.24/x
  3. Step 3: Cross multiply
    687,603.78x = 1,031,616.90 × 328,233.24
  4. Step 4: Simplify right side
    687,603.78x = 338,610,957,525.76
  5. Step 5: Solve for x
    x = 338,610,957,525.76/687,603.78
  6. Step 6: Final answer
    x = 492,450.69

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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.