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Finding the Fourth Proportional to 648,145.23, 894,306.87 and 372,449.79

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Solution

The fourth proportional to 648,145.23, 894,306.87 and 372,449.79 is: 513,903.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,145.23 : 894,306.87 = 372,449.79 : x
  2. Step 2: Convert to fraction form
    648,145.23/894,306.87 = 372,449.79/x
  3. Step 3: Cross multiply
    648,145.23x = 894,306.87 × 372,449.79
  4. Step 4: Simplify right side
    648,145.23x = 333,084,405,927.06
  5. Step 5: Solve for x
    x = 333,084,405,927.06/648,145.23
  6. Step 6: Final answer
    x = 513,903.97

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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.