Home / 721,161.32-1,081,992.87-272,011.05

Finding the Fourth Proportional to 721,161.32, 1,081,992.87 and 272,011.05

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Solution

The fourth proportional to 721,161.32, 1,081,992.87 and 272,011.05 is: 408,111.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,161.32 : 1,081,992.87 = 272,011.05 : x
  2. Step 2: Convert to fraction form
    721,161.32/1,081,992.87 = 272,011.05/x
  3. Step 3: Cross multiply
    721,161.32x = 1,081,992.87 × 272,011.05
  4. Step 4: Simplify right side
    721,161.32x = 294,314,016,661.21
  5. Step 5: Solve for x
    x = 294,314,016,661.21/721,161.32
  6. Step 6: Final answer
    x = 408,111.21

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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.