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Finding the Fourth Proportional to 661,183.36, 912,413.86 and 374,729.92

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Solution

The fourth proportional to 661,183.36, 912,413.86 and 374,729.92 is: 517,116.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,183.36 : 912,413.86 = 374,729.92 : x
  2. Step 2: Convert to fraction form
    661,183.36/912,413.86 = 374,729.92/x
  3. Step 3: Cross multiply
    661,183.36x = 912,413.86 × 374,729.92
  4. Step 4: Simplify right side
    661,183.36x = 341,908,772,764.69
  5. Step 5: Solve for x
    x = 341,908,772,764.69/661,183.36
  6. Step 6: Final answer
    x = 517,116.42

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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.