Home / 772,479.72-1,158,720.54-211,519.08

Finding the Fourth Proportional to 772,479.72, 1,158,720.54 and 211,519.08

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Solution

The fourth proportional to 772,479.72, 1,158,720.54 and 211,519.08 is: 317,278.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,479.72 : 1,158,720.54 = 211,519.08 : x
  2. Step 2: Convert to fraction form
    772,479.72/1,158,720.54 = 211,519.08/x
  3. Step 3: Cross multiply
    772,479.72x = 1,158,720.54 × 211,519.08
  4. Step 4: Simplify right side
    772,479.72x = 245,091,502,597.90
  5. Step 5: Solve for x
    x = 245,091,502,597.90/772,479.72
  6. Step 6: Final answer
    x = 317,278.88

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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.