Home / 1,080,031.80-1,490,489.13-621,146.68

Finding the Fourth Proportional to 1,080,031.80, 1,490,489.13 and 621,146.68

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Solution

The fourth proportional to 1,080,031.80, 1,490,489.13 and 621,146.68 is: 857,208.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080,031.80 : 1,490,489.13 = 621,146.68 : x
  2. Step 2: Convert to fraction form
    1,080,031.80/1,490,489.13 = 621,146.68/x
  3. Step 3: Cross multiply
    1,080,031.80x = 1,490,489.13 × 621,146.68
  4. Step 4: Simplify right side
    1,080,031.80x = 925,812,374,675.59
  5. Step 5: Solve for x
    x = 925,812,374,675.59/1,080,031.80
  6. Step 6: Final answer
    x = 857,208.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.