Home / 780,319.62-1,170,557.31-211,709.64

Finding the Fourth Proportional to 780,319.62, 1,170,557.31 and 211,709.64

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Solution

The fourth proportional to 780,319.62, 1,170,557.31 and 211,709.64 is: 317,585.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,319.62 : 1,170,557.31 = 211,709.64 : x
  2. Step 2: Convert to fraction form
    780,319.62/1,170,557.31 = 211,709.64/x
  3. Step 3: Cross multiply
    780,319.62x = 1,170,557.31 × 211,709.64
  4. Step 4: Simplify right side
    780,319.62x = 247,818,266,699.47
  5. Step 5: Solve for x
    x = 247,818,266,699.47/780,319.62
  6. Step 6: Final answer
    x = 317,585.59

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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.