Home / 1,410,653.80-2,115,980.70-1,389,658.60

Finding the Fourth Proportional to 1,410,653.80, 2,115,980.70 and 1,389,658.60

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Solution

The fourth proportional to 1,410,653.80, 2,115,980.70 and 1,389,658.60 is: 2,084,487.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,410,653.80 : 2,115,980.70 = 1,389,658.60 : x
  2. Step 2: Convert to fraction form
    1,410,653.80/2,115,980.70 = 1,389,658.60/x
  3. Step 3: Cross multiply
    1,410,653.80x = 2,115,980.70 × 1,389,658.60
  4. Step 4: Simplify right side
    1,410,653.80x = 2,940,490,777,189.02
  5. Step 5: Solve for x
    x = 2,940,490,777,189.02/1,410,653.80
  6. Step 6: Final answer
    x = 2,084,487.90

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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.