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Finding the Fourth Proportional to 661,468.26, 912,952.97 and 374,989.48

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Solution

The fourth proportional to 661,468.26, 912,952.97 and 374,989.48 is: 517,557.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,468.26 : 912,952.97 = 374,989.48 : x
  2. Step 2: Convert to fraction form
    661,468.26/912,952.97 = 374,989.48/x
  3. Step 3: Cross multiply
    661,468.26x = 912,952.97 × 374,989.48
  4. Step 4: Simplify right side
    661,468.26x = 342,347,759,484.76
  5. Step 5: Solve for x
    x = 342,347,759,484.76/661,468.26
  6. Step 6: Final answer
    x = 517,557.35

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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.