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Finding the Fourth Proportional to 763,662.78, 1,053,792.81 and 441,393.66

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Solution

The fourth proportional to 763,662.78, 1,053,792.81 and 441,393.66 is: 609,087.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,662.78 : 1,053,792.81 = 441,393.66 : x
  2. Step 2: Convert to fraction form
    763,662.78/1,053,792.81 = 441,393.66/x
  3. Step 3: Cross multiply
    763,662.78x = 1,053,792.81 × 441,393.66
  4. Step 4: Simplify right side
    763,662.78x = 465,137,465,287.59
  5. Step 5: Solve for x
    x = 465,137,465,287.59/763,662.78
  6. Step 6: Final answer
    x = 609,087.52

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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.