Home / 780,141.78-1,170,212.66-539,498.65

Finding the Fourth Proportional to 780,141.78, 1,170,212.66 and 539,498.65

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Solution

The fourth proportional to 780,141.78, 1,170,212.66 and 539,498.65 is: 809,247.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,141.78 : 1,170,212.66 = 539,498.65 : x
  2. Step 2: Convert to fraction form
    780,141.78/1,170,212.66 = 539,498.65/x
  3. Step 3: Cross multiply
    780,141.78x = 1,170,212.66 × 539,498.65
  4. Step 4: Simplify right side
    780,141.78x = 631,328,151,911.83
  5. Step 5: Solve for x
    x = 631,328,151,911.83/780,141.78
  6. Step 6: Final answer
    x = 809,247.97

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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.