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Finding the Fourth Proportional to 555,413.67, 766,466.49 and 300,764.87

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Solution

The fourth proportional to 555,413.67, 766,466.49 and 300,764.87 is: 415,053.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,413.67 : 766,466.49 = 300,764.87 : x
  2. Step 2: Convert to fraction form
    555,413.67/766,466.49 = 300,764.87/x
  3. Step 3: Cross multiply
    555,413.67x = 766,466.49 × 300,764.87
  4. Step 4: Simplify right side
    555,413.67x = 230,526,190,391.87
  5. Step 5: Solve for x
    x = 230,526,190,391.87/555,413.67
  6. Step 6: Final answer
    x = 415,053.14

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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.