Home / 925,787.12-1,386,438.08-640,678.72

Finding the Fourth Proportional to 925,787.12, 1,386,438.08 and 640,678.72

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Solution

The fourth proportional to 925,787.12, 1,386,438.08 and 640,678.72 is: 959,466.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    925,787.12 : 1,386,438.08 = 640,678.72 : x
  2. Step 2: Convert to fraction form
    925,787.12/1,386,438.08 = 640,678.72/x
  3. Step 3: Cross multiply
    925,787.12x = 1,386,438.08 × 640,678.72
  4. Step 4: Simplify right side
    925,787.12x = 888,261,374,453.66
  5. Step 5: Solve for x
    x = 888,261,374,453.66/925,787.12
  6. Step 6: Final answer
    x = 959,466.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.