Home / 7,887,321.80-11,822,817.90-4,285,478.60

Finding the Fourth Proportional to 7,887,321.80, 11,822,817.90 and 4,285,478.60

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Solution

The fourth proportional to 7,887,321.80, 11,822,817.90 and 4,285,478.60 is: 6,423,781.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,887,321.80 : 11,822,817.90 = 4,285,478.60 : x
  2. Step 2: Convert to fraction form
    7,887,321.80/11,822,817.90 = 4,285,478.60/x
  3. Step 3: Cross multiply
    7,887,321.80x = 11,822,817.90 × 4,285,478.60
  4. Step 4: Simplify right side
    7,887,321.80x = 50,666,433,102,146.94
  5. Step 5: Solve for x
    x = 50,666,433,102,146.94/7,887,321.80
  6. Step 6: Final answer
    x = 6,423,781.66

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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.