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Finding the Fourth Proportional to 515,972.40, 772,646.40 and 492,352.80

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Solution

The fourth proportional to 515,972.40, 772,646.40 and 492,352.80 is: 737,277.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,972.40 : 772,646.40 = 492,352.80 : x
  2. Step 2: Convert to fraction form
    515,972.40/772,646.40 = 492,352.80/x
  3. Step 3: Cross multiply
    515,972.40x = 772,646.40 × 492,352.80
  4. Step 4: Simplify right side
    515,972.40x = 380,414,618,449.92
  5. Step 5: Solve for x
    x = 380,414,618,449.92/515,972.40
  6. Step 6: Final answer
    x = 737,277.07

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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.