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Finding the Fourth Proportional to 500,424.66, 690,560.37 and 274,065.30

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Solution

The fourth proportional to 500,424.66, 690,560.37 and 274,065.30 is: 378,196.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,424.66 : 690,560.37 = 274,065.30 : x
  2. Step 2: Convert to fraction form
    500,424.66/690,560.37 = 274,065.30/x
  3. Step 3: Cross multiply
    500,424.66x = 690,560.37 × 274,065.30
  4. Step 4: Simplify right side
    500,424.66x = 189,258,634,972.16
  5. Step 5: Solve for x
    x = 189,258,634,972.16/500,424.66
  6. Step 6: Final answer
    x = 378,196.06

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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.