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Finding the Fourth Proportional to 984,703.20, 1,477,249.20 and 828,016.80

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Solution

The fourth proportional to 984,703.20, 1,477,249.20 and 828,016.80 is: 1,242,188.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    984,703.20 : 1,477,249.20 = 828,016.80 : x
  2. Step 2: Convert to fraction form
    984,703.20/1,477,249.20 = 828,016.80/x
  3. Step 3: Cross multiply
    984,703.20x = 1,477,249.20 × 828,016.80
  4. Step 4: Simplify right side
    984,703.20x = 1,223,187,155,386.56
  5. Step 5: Solve for x
    x = 1,223,187,155,386.56/984,703.20
  6. Step 6: Final answer
    x = 1,242,188.67

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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.