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Finding the Fourth Proportional to 520,016.80, 780,243.90 and 283,529.20

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Solution

The fourth proportional to 520,016.80, 780,243.90 and 283,529.20 is: 425,413.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,016.80 : 780,243.90 = 283,529.20 : x
  2. Step 2: Convert to fraction form
    520,016.80/780,243.90 = 283,529.20/x
  3. Step 3: Cross multiply
    520,016.80x = 780,243.90 × 283,529.20
  4. Step 4: Simplify right side
    520,016.80x = 221,221,928,771.88
  5. Step 5: Solve for x
    x = 221,221,928,771.88/520,016.80
  6. Step 6: Final answer
    x = 425,413.04

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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.