Home / 687,542.45-1,030,122.97-372,215.93

Finding the Fourth Proportional to 687,542.45, 1,030,122.97 and 372,215.93

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Solution

The fourth proportional to 687,542.45, 1,030,122.97 and 372,215.93 is: 557,679.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,542.45 : 1,030,122.97 = 372,215.93 : x
  2. Step 2: Convert to fraction form
    687,542.45/1,030,122.97 = 372,215.93/x
  3. Step 3: Cross multiply
    687,542.45x = 1,030,122.97 × 372,215.93
  4. Step 4: Simplify right side
    687,542.45x = 383,428,173,211.76
  5. Step 5: Solve for x
    x = 383,428,173,211.76/687,542.45
  6. Step 6: Final answer
    x = 557,679.28

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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.