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Finding the Fourth Proportional to 519,590.62, 717,530.28 and 491,285.58

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Solution

The fourth proportional to 519,590.62, 717,530.28 and 491,285.58 is: 678,442.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,590.62 : 717,530.28 = 491,285.58 : x
  2. Step 2: Convert to fraction form
    519,590.62/717,530.28 = 491,285.58/x
  3. Step 3: Cross multiply
    519,590.62x = 717,530.28 × 491,285.58
  4. Step 4: Simplify right side
    519,590.62x = 352,512,279,777.36
  5. Step 5: Solve for x
    x = 352,512,279,777.36/519,590.62
  6. Step 6: Final answer
    x = 678,442.35

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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.