Home / 711,116.57-1,066,176.47-261,778.89

Finding the Fourth Proportional to 711,116.57, 1,066,176.47 and 261,778.89

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Solution

The fourth proportional to 711,116.57, 1,066,176.47 and 261,778.89 is: 392,484.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,116.57 : 1,066,176.47 = 261,778.89 : x
  2. Step 2: Convert to fraction form
    711,116.57/1,066,176.47 = 261,778.89/x
  3. Step 3: Cross multiply
    711,116.57x = 1,066,176.47 × 261,778.89
  4. Step 4: Simplify right side
    711,116.57x = 279,102,491,516.09
  5. Step 5: Solve for x
    x = 279,102,491,516.09/711,116.57
  6. Step 6: Final answer
    x = 392,484.87

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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.