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Finding the Fourth Proportional to 520,046.22, 717,650.04 and 290,605.40

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Solution

The fourth proportional to 520,046.22, 717,650.04 and 290,605.40 is: 401,027.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,046.22 : 717,650.04 = 290,605.40 : x
  2. Step 2: Convert to fraction form
    520,046.22/717,650.04 = 290,605.40/x
  3. Step 3: Cross multiply
    520,046.22x = 717,650.04 × 290,605.40
  4. Step 4: Simplify right side
    520,046.22x = 208,552,976,934.22
  5. Step 5: Solve for x
    x = 208,552,976,934.22/520,046.22
  6. Step 6: Final answer
    x = 401,027.77

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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.