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Finding the Fourth Proportional to 607,745.20, 911,617.80 and 537,761.20

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Solution

The fourth proportional to 607,745.20, 911,617.80 and 537,761.20 is: 806,641.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,745.20 : 911,617.80 = 537,761.20 : x
  2. Step 2: Convert to fraction form
    607,745.20/911,617.80 = 537,761.20/x
  3. Step 3: Cross multiply
    607,745.20x = 911,617.80 × 537,761.20
  4. Step 4: Simplify right side
    607,745.20x = 490,232,682,069.36
  5. Step 5: Solve for x
    x = 490,232,682,069.36/607,745.20
  6. Step 6: Final answer
    x = 806,641.80

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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.