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Finding the Fourth Proportional to 519,810.80, 779,716.20 and 125,826.80

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Solution

The fourth proportional to 519,810.80, 779,716.20 and 125,826.80 is: 188,740.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,810.80 : 779,716.20 = 125,826.80 : x
  2. Step 2: Convert to fraction form
    519,810.80/779,716.20 = 125,826.80/x
  3. Step 3: Cross multiply
    519,810.80x = 779,716.20 × 125,826.80
  4. Step 4: Simplify right side
    519,810.80x = 98,109,194,354.16
  5. Step 5: Solve for x
    x = 98,109,194,354.16/519,810.80
  6. Step 6: Final answer
    x = 188,740.20

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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.