Home / 687,019.90-948,102.68-381,086.34

Finding the Fourth Proportional to 687,019.90, 948,102.68 and 381,086.34

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Solution

The fourth proportional to 687,019.90, 948,102.68 and 381,086.34 is: 525,907.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,019.90 : 948,102.68 = 381,086.34 : x
  2. Step 2: Convert to fraction form
    687,019.90/948,102.68 = 381,086.34/x
  3. Step 3: Cross multiply
    687,019.90x = 948,102.68 × 381,086.34
  4. Step 4: Simplify right side
    687,019.90x = 361,308,980,265.39
  5. Step 5: Solve for x
    x = 361,308,980,265.39/687,019.90
  6. Step 6: Final answer
    x = 525,907.59

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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.