Home / 742,388.30-1,113,458.61-209,787.74

Finding the Fourth Proportional to 742,388.30, 1,113,458.61 and 209,787.74

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Solution

The fourth proportional to 742,388.30, 1,113,458.61 and 209,787.74 is: 314,646.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,388.30 : 1,113,458.61 = 209,787.74 : x
  2. Step 2: Convert to fraction form
    742,388.30/1,113,458.61 = 209,787.74/x
  3. Step 3: Cross multiply
    742,388.30x = 1,113,458.61 × 209,787.74
  4. Step 4: Simplify right side
    742,388.30x = 233,589,965,375.44
  5. Step 5: Solve for x
    x = 233,589,965,375.44/742,388.30
  6. Step 6: Final answer
    x = 314,646.61

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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.