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Finding the Fourth Proportional to 923,972, 1,275,081.36 and 500,036

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Solution

The fourth proportional to 923,972, 1,275,081.36 and 500,036 is: 690,049.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    923,972 : 1,275,081.36 = 500,036 : x
  2. Step 2: Convert to fraction form
    923,972/1,275,081.36 = 500,036/x
  3. Step 3: Cross multiply
    923,972x = 1,275,081.36 × 500,036
  4. Step 4: Simplify right side
    923,972x = 637,586,582,928.96
  5. Step 5: Solve for x
    x = 637,586,582,928.96/923,972
  6. Step 6: Final answer
    x = 690,049.68

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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.