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Finding the Fourth Proportional to 1,384,414, 1,910,491.32 and 748,510

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Solution

The fourth proportional to 1,384,414, 1,910,491.32 and 748,510 is: 1,032,943.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384,414 : 1,910,491.32 = 748,510 : x
  2. Step 2: Convert to fraction form
    1,384,414/1,910,491.32 = 748,510/x
  3. Step 3: Cross multiply
    1,384,414x = 1,910,491.32 × 748,510
  4. Step 4: Simplify right side
    1,384,414x = 1,430,021,857,933.20
  5. Step 5: Solve for x
    x = 1,430,021,857,933.20/1,384,414
  6. Step 6: Final answer
    x = 1,032,943.80

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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.