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Finding the Fourth Proportional to 661,350.44, 912,665.76 and 374,889.80

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Solution

The fourth proportional to 661,350.44, 912,665.76 and 374,889.80 is: 517,349.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,350.44 : 912,665.76 = 374,889.80 : x
  2. Step 2: Convert to fraction form
    661,350.44/912,665.76 = 374,889.80/x
  3. Step 3: Cross multiply
    661,350.44x = 912,665.76 × 374,889.80
  4. Step 4: Simplify right side
    661,350.44x = 342,149,084,233.25
  5. Step 5: Solve for x
    x = 342,149,084,233.25/661,350.44
  6. Step 6: Final answer
    x = 517,349.14

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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.