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Finding the Fourth Proportional to 520,702.29, 718,279.99 and 302,886.43

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Solution

The fourth proportional to 520,702.29, 718,279.99 and 302,886.43 is: 417,815.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,702.29 : 718,279.99 = 302,886.43 : x
  2. Step 2: Convert to fraction form
    520,702.29/718,279.99 = 302,886.43/x
  3. Step 3: Cross multiply
    520,702.29x = 718,279.99 × 302,886.43
  4. Step 4: Simplify right side
    520,702.29x = 217,557,259,358.62
  5. Step 5: Solve for x
    x = 217,557,259,358.62/520,702.29
  6. Step 6: Final answer
    x = 417,815.06

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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.