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Finding the Fourth Proportional to 991,993.92, 1,369,058.64 and 562,227.90

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Solution

The fourth proportional to 991,993.92, 1,369,058.64 and 562,227.90 is: 775,935.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,993.92 : 1,369,058.64 = 562,227.90 : x
  2. Step 2: Convert to fraction form
    991,993.92/1,369,058.64 = 562,227.90/x
  3. Step 3: Cross multiply
    991,993.92x = 1,369,058.64 × 562,227.90
  4. Step 4: Simplify right side
    991,993.92x = 769,722,964,144.06
  5. Step 5: Solve for x
    x = 769,722,964,144.06/991,993.92
  6. Step 6: Final answer
    x = 775,935.16

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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.