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Finding the Fourth Proportional to 911,304.56, 1,256,658.24 and 782,668.97

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Solution

The fourth proportional to 911,304.56, 1,256,658.24 and 782,668.97 is: 1,079,274.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,304.56 : 1,256,658.24 = 782,668.97 : x
  2. Step 2: Convert to fraction form
    911,304.56/1,256,658.24 = 782,668.97/x
  3. Step 3: Cross multiply
    911,304.56x = 1,256,658.24 × 782,668.97
  4. Step 4: Simplify right side
    911,304.56x = 983,547,404,059.52
  5. Step 5: Solve for x
    x = 983,547,404,059.52/911,304.56
  6. Step 6: Final answer
    x = 1,079,274.10

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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.