Home / 991,413.96-1,368,148.60-538,704.96

Finding the Fourth Proportional to 991,413.96, 1,368,148.60 and 538,704.96

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Solution

The fourth proportional to 991,413.96, 1,368,148.60 and 538,704.96 is: 743,411.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,413.96 : 1,368,148.60 = 538,704.96 : x
  2. Step 2: Convert to fraction form
    991,413.96/1,368,148.60 = 538,704.96/x
  3. Step 3: Cross multiply
    991,413.96x = 1,368,148.60 × 538,704.96
  4. Step 4: Simplify right side
    991,413.96x = 737,028,436,837.06
  5. Step 5: Solve for x
    x = 737,028,436,837.06/991,413.96
  6. Step 6: Final answer
    x = 743,411.40

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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.