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Finding the Fourth Proportional to 661,100.40, 912,484.44 and 374,791.32

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Solution

The fourth proportional to 661,100.40, 912,484.44 and 374,791.32 is: 517,306.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,100.40 : 912,484.44 = 374,791.32 : x
  2. Step 2: Convert to fraction form
    661,100.40/912,484.44 = 374,791.32/x
  3. Step 3: Cross multiply
    661,100.40x = 912,484.44 × 374,791.32
  4. Step 4: Simplify right side
    661,100.40x = 341,991,247,747.06
  5. Step 5: Solve for x
    x = 341,991,247,747.06/661,100.40
  6. Step 6: Final answer
    x = 517,306.07

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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.