Home / 462,986.20-638,917.50-261,789.40

Finding the Fourth Proportional to 462,986.20, 638,917.50 and 261,789.40

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Solution

The fourth proportional to 462,986.20, 638,917.50 and 261,789.40 is: 361,267.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,986.20 : 638,917.50 = 261,789.40 : x
  2. Step 2: Convert to fraction form
    462,986.20/638,917.50 = 261,789.40/x
  3. Step 3: Cross multiply
    462,986.20x = 638,917.50 × 261,789.40
  4. Step 4: Simplify right side
    462,986.20x = 167,261,828,974.50
  5. Step 5: Solve for x
    x = 167,261,828,974.50/462,986.20
  6. Step 6: Final answer
    x = 361,267.42

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1.5x scale

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.