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Finding the Fourth Proportional to 661,467.26, 912,951.59 and 374,988.48

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Solution

The fourth proportional to 661,467.26, 912,951.59 and 374,988.48 is: 517,555.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,467.26 : 912,951.59 = 374,988.48 : x
  2. Step 2: Convert to fraction form
    661,467.26/912,951.59 = 374,988.48/x
  3. Step 3: Cross multiply
    661,467.26x = 912,951.59 × 374,988.48
  4. Step 4: Simplify right side
    661,467.26x = 342,346,327,172.74
  5. Step 5: Solve for x
    x = 342,346,327,172.74/661,467.26
  6. Step 6: Final answer
    x = 517,555.97

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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.