Home / 880,413.20-1,320,619.80-408,021.20

Finding the Fourth Proportional to 880,413.20, 1,320,619.80 and 408,021.20

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Solution

The fourth proportional to 880,413.20, 1,320,619.80 and 408,021.20 is: 612,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,413.20 : 1,320,619.80 = 408,021.20 : x
  2. Step 2: Convert to fraction form
    880,413.20/1,320,619.80 = 408,021.20/x
  3. Step 3: Cross multiply
    880,413.20x = 1,320,619.80 × 408,021.20
  4. Step 4: Simplify right side
    880,413.20x = 538,840,875,539.76
  5. Step 5: Solve for x
    x = 538,840,875,539.76/880,413.20
  6. Step 6: Final answer
    x = 612,031.80

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Similar ratio
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1.5x scale

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.