Home / 820,170.30-1,230,255.45-741,438.30

Finding the Fourth Proportional to 820,170.30, 1,230,255.45 and 741,438.30

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Solution

The fourth proportional to 820,170.30, 1,230,255.45 and 741,438.30 is: 1,112,157.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,170.30 : 1,230,255.45 = 741,438.30 : x
  2. Step 2: Convert to fraction form
    820,170.30/1,230,255.45 = 741,438.30/x
  3. Step 3: Cross multiply
    820,170.30x = 1,230,255.45 × 741,438.30
  4. Step 4: Simplify right side
    820,170.30x = 912,158,509,413.74
  5. Step 5: Solve for x
    x = 912,158,509,413.74/820,170.30
  6. Step 6: Final answer
    x = 1,112,157.45

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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.