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Finding the Fourth Proportional to 520,530.31, 718,333.74 and 302,791.23

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Solution

The fourth proportional to 520,530.31, 718,333.74 and 302,791.23 is: 417,853.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,530.31 : 718,333.74 = 302,791.23 : x
  2. Step 2: Convert to fraction form
    520,530.31/718,333.74 = 302,791.23/x
  3. Step 3: Cross multiply
    520,530.31x = 718,333.74 × 302,791.23
  4. Step 4: Simplify right side
    520,530.31x = 217,505,156,685.10
  5. Step 5: Solve for x
    x = 217,505,156,685.10/520,530.31
  6. Step 6: Final answer
    x = 417,853.01

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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.