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Finding the Fourth Proportional to 642,704.16, 886,960.67 and 367,085.97

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Solution

The fourth proportional to 642,704.16, 886,960.67 and 367,085.97 is: 506,595.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,704.16 : 886,960.67 = 367,085.97 : x
  2. Step 2: Convert to fraction form
    642,704.16/886,960.67 = 367,085.97/x
  3. Step 3: Cross multiply
    642,704.16x = 886,960.67 × 367,085.97
  4. Step 4: Simplify right side
    642,704.16x = 325,590,816,063.37
  5. Step 5: Solve for x
    x = 325,590,816,063.37/642,704.16
  6. Step 6: Final answer
    x = 506,595.16

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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.