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Finding the Fourth Proportional to 515,042.60, 769,431.02 and 333,651.45

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Solution

The fourth proportional to 515,042.60, 769,431.02 and 333,651.45 is: 498,447.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,042.60 : 769,431.02 = 333,651.45 : x
  2. Step 2: Convert to fraction form
    515,042.60/769,431.02 = 333,651.45/x
  3. Step 3: Cross multiply
    515,042.60x = 769,431.02 × 333,651.45
  4. Step 4: Simplify right side
    515,042.60x = 256,721,779,530.27
  5. Step 5: Solve for x
    x = 256,721,779,530.27/515,042.60
  6. Step 6: Final answer
    x = 498,447.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.