Home / 1,987,132.80-2,979,241.20-788,462.40

Finding the Fourth Proportional to 1,987,132.80, 2,979,241.20 and 788,462.40

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Solution

The fourth proportional to 1,987,132.80, 2,979,241.20 and 788,462.40 is: 1,182,115.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,132.80 : 2,979,241.20 = 788,462.40 : x
  2. Step 2: Convert to fraction form
    1,987,132.80/2,979,241.20 = 788,462.40/x
  3. Step 3: Cross multiply
    1,987,132.80x = 2,979,241.20 × 788,462.40
  4. Step 4: Simplify right side
    1,987,132.80x = 2,349,019,666,730.88
  5. Step 5: Solve for x
    x = 2,349,019,666,730.88/1,987,132.80
  6. Step 6: Final answer
    x = 1,182,115.09

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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.