Home / 1,500,711.96-2,070,980.29-812,380.44

Finding the Fourth Proportional to 1,500,711.96, 2,070,980.29 and 812,380.44

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Solution

The fourth proportional to 1,500,711.96, 2,070,980.29 and 812,380.44 is: 1,121,083.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,500,711.96 : 2,070,980.29 = 812,380.44 : x
  2. Step 2: Convert to fraction form
    1,500,711.96/2,070,980.29 = 812,380.44/x
  3. Step 3: Cross multiply
    1,500,711.96x = 2,070,980.29 × 812,380.44
  4. Step 4: Simplify right side
    1,500,711.96x = 1,682,423,879,221.53
  5. Step 5: Solve for x
    x = 1,682,423,879,221.53/1,500,711.96
  6. Step 6: Final answer
    x = 1,121,083.81

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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.