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Finding the Fourth Proportional to 515,430, 711,604.44 and 336,893.04

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Solution

The fourth proportional to 515,430, 711,604.44 and 336,893.04 is: 465,115.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,430 : 711,604.44 = 336,893.04 : x
  2. Step 2: Convert to fraction form
    515,430/711,604.44 = 336,893.04/x
  3. Step 3: Cross multiply
    515,430x = 711,604.44 × 336,893.04
  4. Step 4: Simplify right side
    515,430x = 239,734,583,069.10
  5. Step 5: Solve for x
    x = 239,734,583,069.10/515,430
  6. Step 6: Final answer
    x = 465,115.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.