Home / 1,230,221.80-1,844,987.10-389,031.40

Finding the Fourth Proportional to 1,230,221.80, 1,844,987.10 and 389,031.40

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Solution

The fourth proportional to 1,230,221.80, 1,844,987.10 and 389,031.40 is: 583,437.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,221.80 : 1,844,987.10 = 389,031.40 : x
  2. Step 2: Convert to fraction form
    1,230,221.80/1,844,987.10 = 389,031.40/x
  3. Step 3: Cross multiply
    1,230,221.80x = 1,844,987.10 × 389,031.40
  4. Step 4: Simplify right side
    1,230,221.80x = 717,757,914,494.94
  5. Step 5: Solve for x
    x = 717,757,914,494.94/1,230,221.80
  6. Step 6: Final answer
    x = 583,437.81

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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.