Home / 1,331,071.20-1,996,803.36-489,561.12

Finding the Fourth Proportional to 1,331,071.20, 1,996,803.36 and 489,561.12

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Solution

The fourth proportional to 1,331,071.20, 1,996,803.36 and 489,561.12 is: 734,413.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,071.20 : 1,996,803.36 = 489,561.12 : x
  2. Step 2: Convert to fraction form
    1,331,071.20/1,996,803.36 = 489,561.12/x
  3. Step 3: Cross multiply
    1,331,071.20x = 1,996,803.36 × 489,561.12
  4. Step 4: Simplify right side
    1,331,071.20x = 977,557,289,341.36
  5. Step 5: Solve for x
    x = 977,557,289,341.36/1,331,071.20
  6. Step 6: Final answer
    x = 734,413.97

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Double scale
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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.