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Finding the Fourth Proportional to 565,195.78, 779,435.76 and 371,261.32

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Solution

The fourth proportional to 565,195.78, 779,435.76 and 371,261.32 is: 511,989.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,195.78 : 779,435.76 = 371,261.32 : x
  2. Step 2: Convert to fraction form
    565,195.78/779,435.76 = 371,261.32/x
  3. Step 3: Cross multiply
    565,195.78x = 779,435.76 × 371,261.32
  4. Step 4: Simplify right side
    565,195.78x = 289,374,349,112.80
  5. Step 5: Solve for x
    x = 289,374,349,112.80/565,195.78
  6. Step 6: Final answer
    x = 511,989.58

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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.