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Finding the Fourth Proportional to 1,384,373, 1,910,434.74 and 748,469

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Solution

The fourth proportional to 1,384,373, 1,910,434.74 and 748,469 is: 1,032,887.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384,373 : 1,910,434.74 = 748,469 : x
  2. Step 2: Convert to fraction form
    1,384,373/1,910,434.74 = 748,469/x
  3. Step 3: Cross multiply
    1,384,373x = 1,910,434.74 × 748,469
  4. Step 4: Simplify right side
    1,384,373x = 1,429,901,179,413.06
  5. Step 5: Solve for x
    x = 1,429,901,179,413.06/1,384,373
  6. Step 6: Final answer
    x = 1,032,887.22

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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.