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Finding the Fourth Proportional to 565,132.76, 779,997.80 and 347,242.20

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Solution

The fourth proportional to 565,132.76, 779,997.80 and 347,242.20 is: 479,264.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,132.76 : 779,997.80 = 347,242.20 : x
  2. Step 2: Convert to fraction form
    565,132.76/779,997.80 = 347,242.20/x
  3. Step 3: Cross multiply
    565,132.76x = 779,997.80 × 347,242.20
  4. Step 4: Simplify right side
    565,132.76x = 270,848,152,067.16
  5. Step 5: Solve for x
    x = 270,848,152,067.16/565,132.76
  6. Step 6: Final answer
    x = 479,264.65

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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.