Home / 8,220,403.20-12,330,604.80-7,889,728.80

Finding the Fourth Proportional to 8,220,403.20, 12,330,604.80 and 7,889,728.80

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Solution

The fourth proportional to 8,220,403.20, 12,330,604.80 and 7,889,728.80 is: 11,834,593.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220,403.20 : 12,330,604.80 = 7,889,728.80 : x
  2. Step 2: Convert to fraction form
    8,220,403.20/12,330,604.80 = 7,889,728.80/x
  3. Step 3: Cross multiply
    8,220,403.20x = 12,330,604.80 × 7,889,728.80
  4. Step 4: Simplify right side
    8,220,403.20x = 97,285,127,811,978.25
  5. Step 5: Solve for x
    x = 97,285,127,811,978.25/8,220,403.20
  6. Step 6: Final answer
    x = 11,834,593.20

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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.