Home / 990,413.80-1,485,620.70-927,428.20

Finding the Fourth Proportional to 990,413.80, 1,485,620.70 and 927,428.20

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Solution

The fourth proportional to 990,413.80, 1,485,620.70 and 927,428.20 is: 1,391,142.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,413.80 : 1,485,620.70 = 927,428.20 : x
  2. Step 2: Convert to fraction form
    990,413.80/1,485,620.70 = 927,428.20/x
  3. Step 3: Cross multiply
    990,413.80x = 1,485,620.70 × 927,428.20
  4. Step 4: Simplify right side
    990,413.80x = 1,377,806,531,683.74
  5. Step 5: Solve for x
    x = 1,377,806,531,683.74/990,413.80
  6. Step 6: Final answer
    x = 1,391,142.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.