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Finding the Fourth Proportional to 722,114.28, 996,533.28 and 395,441.06

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Solution

The fourth proportional to 722,114.28, 996,533.28 and 395,441.06 is: 545,717.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,114.28 : 996,533.28 = 395,441.06 : x
  2. Step 2: Convert to fraction form
    722,114.28/996,533.28 = 395,441.06/x
  3. Step 3: Cross multiply
    722,114.28x = 996,533.28 × 395,441.06
  4. Step 4: Simplify right side
    722,114.28x = 394,070,171,585.81
  5. Step 5: Solve for x
    x = 394,070,171,585.81/722,114.28
  6. Step 6: Final answer
    x = 545,717.18

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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.