Home / 687,606.28-948,881.70-381,664.84

Finding the Fourth Proportional to 687,606.28, 948,881.70 and 381,664.84

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Solution

The fourth proportional to 687,606.28, 948,881.70 and 381,664.84 is: 526,689.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,606.28 : 948,881.70 = 381,664.84 : x
  2. Step 2: Convert to fraction form
    687,606.28/948,881.70 = 381,664.84/x
  3. Step 3: Cross multiply
    687,606.28x = 948,881.70 × 381,664.84
  4. Step 4: Simplify right side
    687,606.28x = 362,154,782,209.43
  5. Step 5: Solve for x
    x = 362,154,782,209.43/687,606.28
  6. Step 6: Final answer
    x = 526,689.17

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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.