Home / 1,987,009.80-2,980,514.70-491,101.80

Finding the Fourth Proportional to 1,987,009.80, 2,980,514.70 and 491,101.80

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Solution

The fourth proportional to 1,987,009.80, 2,980,514.70 and 491,101.80 is: 736,652.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,009.80 : 2,980,514.70 = 491,101.80 : x
  2. Step 2: Convert to fraction form
    1,987,009.80/2,980,514.70 = 491,101.80/x
  3. Step 3: Cross multiply
    1,987,009.80x = 2,980,514.70 × 491,101.80
  4. Step 4: Simplify right side
    1,987,009.80x = 1,463,736,134,096.46
  5. Step 5: Solve for x
    x = 1,463,736,134,096.46/1,987,009.80
  6. Step 6: Final answer
    x = 736,652.70

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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.