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Finding the Fourth Proportional to 911,576.57, 1,258,034.92 and 503,678.46

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Solution

The fourth proportional to 911,576.57, 1,258,034.92 and 503,678.46 is: 695,109.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,576.57 : 1,258,034.92 = 503,678.46 : x
  2. Step 2: Convert to fraction form
    911,576.57/1,258,034.92 = 503,678.46/x
  3. Step 3: Cross multiply
    911,576.57x = 1,258,034.92 × 503,678.46
  4. Step 4: Simplify right side
    911,576.57x = 633,645,089,872.63
  5. Step 5: Solve for x
    x = 633,645,089,872.63/911,576.57
  6. Step 6: Final answer
    x = 695,109.01

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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.