Home / 1,387,092.11-2,080,638.16-389,820.11

Finding the Fourth Proportional to 1,387,092.11, 2,080,638.16 and 389,820.11

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Solution

The fourth proportional to 1,387,092.11, 2,080,638.16 and 389,820.11 is: 584,730.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,092.11 : 2,080,638.16 = 389,820.11 : x
  2. Step 2: Convert to fraction form
    1,387,092.11/2,080,638.16 = 389,820.11/x
  3. Step 3: Cross multiply
    1,387,092.11x = 2,080,638.16 × 389,820.11
  4. Step 4: Simplify right side
    1,387,092.11x = 811,074,585,023.66
  5. Step 5: Solve for x
    x = 811,074,585,023.66/1,387,092.11
  6. Step 6: Final answer
    x = 584,730.16

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1.5x scale

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.