Home / 1,987,245.80-2,979,410.70-788,575.40

Finding the Fourth Proportional to 1,987,245.80, 2,979,410.70 and 788,575.40

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Solution

The fourth proportional to 1,987,245.80, 2,979,410.70 and 788,575.40 is: 1,182,284.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,245.80 : 2,979,410.70 = 788,575.40 : x
  2. Step 2: Convert to fraction form
    1,987,245.80/2,979,410.70 = 788,575.40/x
  3. Step 3: Cross multiply
    1,987,245.80x = 2,979,410.70 × 788,575.40
  4. Step 4: Simplify right side
    1,987,245.80x = 2,349,489,984,516.78
  5. Step 5: Solve for x
    x = 2,349,489,984,516.78/1,987,245.80
  6. Step 6: Final answer
    x = 1,182,284.54

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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.