Home / 1,386,808.20-2,080,212.30-545,387.40

Finding the Fourth Proportional to 1,386,808.20, 2,080,212.30 and 545,387.40

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Solution

The fourth proportional to 1,386,808.20, 2,080,212.30 and 545,387.40 is: 818,081.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,808.20 : 2,080,212.30 = 545,387.40 : x
  2. Step 2: Convert to fraction form
    1,386,808.20/2,080,212.30 = 545,387.40/x
  3. Step 3: Cross multiply
    1,386,808.20x = 2,080,212.30 × 545,387.40
  4. Step 4: Simplify right side
    1,386,808.20x = 1,134,521,577,745.02
  5. Step 5: Solve for x
    x = 1,134,521,577,745.02/1,386,808.20
  6. Step 6: Final answer
    x = 818,081.10

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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.