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Finding the Fourth Proportional to 520,042.22, 717,644.52 and 290,601.39

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Solution

The fourth proportional to 520,042.22, 717,644.52 and 290,601.39 is: 401,022.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,042.22 : 717,644.52 = 290,601.39 : x
  2. Step 2: Convert to fraction form
    520,042.22/717,644.52 = 290,601.39/x
  3. Step 3: Cross multiply
    520,042.22x = 717,644.52 × 290,601.39
  4. Step 4: Simplify right side
    520,042.22x = 208,548,498,804.89
  5. Step 5: Solve for x
    x = 208,548,498,804.89/520,042.22
  6. Step 6: Final answer
    x = 401,022.24

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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.