Home / 1,121,156.28-1,681,831.62-322,502.76

Finding the Fourth Proportional to 1,121,156.28, 1,681,831.62 and 322,502.76

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Solution

The fourth proportional to 1,121,156.28, 1,681,831.62 and 322,502.76 is: 483,782.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,156.28 : 1,681,831.62 = 322,502.76 : x
  2. Step 2: Convert to fraction form
    1,121,156.28/1,681,831.62 = 322,502.76/x
  3. Step 3: Cross multiply
    1,121,156.28x = 1,681,831.62 × 322,502.76
  4. Step 4: Simplify right side
    1,121,156.28x = 542,395,339,305.27
  5. Step 5: Solve for x
    x = 542,395,339,305.27/1,121,156.28
  6. Step 6: Final answer
    x = 483,782.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.