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Finding the Fourth Proportional to 519,859.40, 779,877.78 and 231,775.58

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Solution

The fourth proportional to 519,859.40, 779,877.78 and 231,775.58 is: 347,702.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,859.40 : 779,877.78 = 231,775.58 : x
  2. Step 2: Convert to fraction form
    519,859.40/779,877.78 = 231,775.58/x
  3. Step 3: Cross multiply
    519,859.40x = 779,877.78 × 231,775.58
  4. Step 4: Simplify right side
    519,859.40x = 180,756,621,645.30
  5. Step 5: Solve for x
    x = 180,756,621,645.30/519,859.40
  6. Step 6: Final answer
    x = 347,702.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.