Home / 687,287.43-948,461.81-381,365.01

Finding the Fourth Proportional to 687,287.43, 948,461.81 and 381,365.01

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Solution

The fourth proportional to 687,287.43, 948,461.81 and 381,365.01 is: 526,286.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,287.43 : 948,461.81 = 381,365.01 : x
  2. Step 2: Convert to fraction form
    687,287.43/948,461.81 = 381,365.01/x
  3. Step 3: Cross multiply
    687,287.43x = 948,461.81 × 381,365.01
  4. Step 4: Simplify right side
    687,287.43x = 361,710,145,748.44
  5. Step 5: Solve for x
    x = 361,710,145,748.44/687,287.43
  6. Step 6: Final answer
    x = 526,286.57

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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.