Home / 386,498.40-579,747.60-331,202.40

Finding the Fourth Proportional to 386,498.40, 579,747.60 and 331,202.40

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Solution

The fourth proportional to 386,498.40, 579,747.60 and 331,202.40 is: 496,803.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,498.40 : 579,747.60 = 331,202.40 : x
  2. Step 2: Convert to fraction form
    386,498.40/579,747.60 = 331,202.40/x
  3. Step 3: Cross multiply
    386,498.40x = 579,747.60 × 331,202.40
  4. Step 4: Simplify right side
    386,498.40x = 192,013,796,514.24
  5. Step 5: Solve for x
    x = 192,013,796,514.24/386,498.40
  6. Step 6: Final answer
    x = 496,803.60

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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.