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Finding the Fourth Proportional to 692,960.34, 956,016.90 and 406,375.86

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Solution

The fourth proportional to 692,960.34, 956,016.90 and 406,375.86 is: 560,641.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,960.34 : 956,016.90 = 406,375.86 : x
  2. Step 2: Convert to fraction form
    692,960.34/956,016.90 = 406,375.86/x
  3. Step 3: Cross multiply
    692,960.34x = 956,016.90 × 406,375.86
  4. Step 4: Simplify right side
    692,960.34x = 388,502,189,912.03
  5. Step 5: Solve for x
    x = 388,502,189,912.03/692,960.34
  6. Step 6: Final answer
    x = 560,641.31

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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.