Home / 462,982.20-638,911.98-261,785.40

Finding the Fourth Proportional to 462,982.20, 638,911.98 and 261,785.40

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Solution

The fourth proportional to 462,982.20, 638,911.98 and 261,785.40 is: 361,261.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,982.20 : 638,911.98 = 261,785.40 : x
  2. Step 2: Convert to fraction form
    462,982.20/638,911.98 = 261,785.40/x
  3. Step 3: Cross multiply
    462,982.20x = 638,911.98 × 261,785.40
  4. Step 4: Simplify right side
    462,982.20x = 167,257,828,249.09
  5. Step 5: Solve for x
    x = 167,257,828,249.09/462,982.20
  6. Step 6: Final answer
    x = 361,261.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.