Home / 687,220.04-948,477.43-381,394.65

Finding the Fourth Proportional to 687,220.04, 948,477.43 and 381,394.65

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Solution

The fourth proportional to 687,220.04, 948,477.43 and 381,394.65 is: 526,387.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,220.04 : 948,477.43 = 381,394.65 : x
  2. Step 2: Convert to fraction form
    687,220.04/948,477.43 = 381,394.65/x
  3. Step 3: Cross multiply
    687,220.04x = 948,477.43 × 381,394.65
  4. Step 4: Simplify right side
    687,220.04x = 361,744,221,481.28
  5. Step 5: Solve for x
    x = 361,744,221,481.28/687,220.04
  6. Step 6: Final answer
    x = 526,387.76

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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.