Home / 980,385.76-1,470,680.90-270,413.92

Finding the Fourth Proportional to 980,385.76, 1,470,680.90 and 270,413.92

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Solution

The fourth proportional to 980,385.76, 1,470,680.90 and 270,413.92 is: 405,649.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,385.76 : 1,470,680.90 = 270,413.92 : x
  2. Step 2: Convert to fraction form
    980,385.76/1,470,680.90 = 270,413.92/x
  3. Step 3: Cross multiply
    980,385.76x = 1,470,680.90 × 270,413.92
  4. Step 4: Simplify right side
    980,385.76x = 397,692,587,238.13
  5. Step 5: Solve for x
    x = 397,692,587,238.13/980,385.76
  6. Step 6: Final answer
    x = 405,649.09

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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.