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Finding the Fourth Proportional to 664,758.44, 997,200.37 and 515,166.28

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Solution

The fourth proportional to 664,758.44, 997,200.37 and 515,166.28 is: 772,798.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,758.44 : 997,200.37 = 515,166.28 : x
  2. Step 2: Convert to fraction form
    664,758.44/997,200.37 = 515,166.28/x
  3. Step 3: Cross multiply
    664,758.44x = 997,200.37 × 515,166.28
  4. Step 4: Simplify right side
    664,758.44x = 513,724,000,280.67
  5. Step 5: Solve for x
    x = 513,724,000,280.67/664,758.44
  6. Step 6: Final answer
    x = 772,798.01

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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.