Home / 1,389,660.60-2,084,490.90-491,131.65

Finding the Fourth Proportional to 1,389,660.60, 2,084,490.90 and 491,131.65

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Solution

The fourth proportional to 1,389,660.60, 2,084,490.90 and 491,131.65 is: 736,697.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,660.60 : 2,084,490.90 = 491,131.65 : x
  2. Step 2: Convert to fraction form
    1,389,660.60/2,084,490.90 = 491,131.65/x
  3. Step 3: Cross multiply
    1,389,660.60x = 2,084,490.90 × 491,131.65
  4. Step 4: Simplify right side
    1,389,660.60x = 1,023,759,455,126.99
  5. Step 5: Solve for x
    x = 1,023,759,455,126.99/1,389,660.60
  6. Step 6: Final answer
    x = 736,697.48

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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.