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Finding the Fourth Proportional to 520,403.74, 718,147.80 and 294,044.38

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Solution

The fourth proportional to 520,403.74, 718,147.80 and 294,044.38 is: 405,775.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,403.74 : 718,147.80 = 294,044.38 : x
  2. Step 2: Convert to fraction form
    520,403.74/718,147.80 = 294,044.38/x
  3. Step 3: Cross multiply
    520,403.74x = 718,147.80 × 294,044.38
  4. Step 4: Simplify right side
    520,403.74x = 211,167,324,599.36
  5. Step 5: Solve for x
    x = 211,167,324,599.36/520,403.74
  6. Step 6: Final answer
    x = 405,775.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.