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Finding the Fourth Proportional to 556,963.92, 768,590.31 and 315,241.30

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Solution

The fourth proportional to 556,963.92, 768,590.31 and 315,241.30 is: 435,021.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,963.92 : 768,590.31 = 315,241.30 : x
  2. Step 2: Convert to fraction form
    556,963.92/768,590.31 = 315,241.30/x
  3. Step 3: Cross multiply
    556,963.92x = 768,590.31 × 315,241.30
  4. Step 4: Simplify right side
    556,963.92x = 242,291,403,072.65
  5. Step 5: Solve for x
    x = 242,291,403,072.65/556,963.92
  6. Step 6: Final answer
    x = 435,021.73

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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.