Home / 918,107.10-1,286,399.70-918,107.10

Finding the Fourth Proportional to 918,107.10, 1,286,399.70 and 918,107.10

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Solution

The fourth proportional to 918,107.10, 1,286,399.70 and 918,107.10 is: 1,286,399.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,107.10 : 1,286,399.70 = 918,107.10 : x
  2. Step 2: Convert to fraction form
    918,107.10/1,286,399.70 = 918,107.10/x
  3. Step 3: Cross multiply
    918,107.10x = 1,286,399.70 × 918,107.10
  4. Step 4: Simplify right side
    918,107.10x = 1,181,052,698,007.87
  5. Step 5: Solve for x
    x = 1,181,052,698,007.87/918,107.10
  6. Step 6: Final answer
    x = 1,286,399.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.