Home / 890,787.78-1,229,290.50-482,890.38

Finding the Fourth Proportional to 890,787.78, 1,229,290.50 and 482,890.38

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Solution

The fourth proportional to 890,787.78, 1,229,290.50 and 482,890.38 is: 666,390.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,787.78 : 1,229,290.50 = 482,890.38 : x
  2. Step 2: Convert to fraction form
    890,787.78/1,229,290.50 = 482,890.38/x
  3. Step 3: Cross multiply
    890,787.78x = 1,229,290.50 × 482,890.38
  4. Step 4: Simplify right side
    890,787.78x = 593,612,556,675.39
  5. Step 5: Solve for x
    x = 593,612,556,675.39/890,787.78
  6. Step 6: Final answer
    x = 666,390.55

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Double scale
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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.