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Finding the Fourth Proportional to 871,722.31, 1,203,303.11 and 654,558.32

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Solution

The fourth proportional to 871,722.31, 1,203,303.11 and 654,558.32 is: 903,535.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,722.31 : 1,203,303.11 = 654,558.32 : x
  2. Step 2: Convert to fraction form
    871,722.31/1,203,303.11 = 654,558.32/x
  3. Step 3: Cross multiply
    871,722.31x = 1,203,303.11 × 654,558.32
  4. Step 4: Simplify right side
    871,722.31x = 787,632,066,777.03
  5. Step 5: Solve for x
    x = 787,632,066,777.03/871,722.31
  6. Step 6: Final answer
    x = 903,535.51

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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.