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Finding the Fourth Proportional to 515,469.68, 711,033.72 and 341,039.60

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Solution

The fourth proportional to 515,469.68, 711,033.72 and 341,039.60 is: 470,426.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,469.68 : 711,033.72 = 341,039.60 : x
  2. Step 2: Convert to fraction form
    515,469.68/711,033.72 = 341,039.60/x
  3. Step 3: Cross multiply
    515,469.68x = 711,033.72 × 341,039.60
  4. Step 4: Simplify right side
    515,469.68x = 242,490,655,455.31
  5. Step 5: Solve for x
    x = 242,490,655,455.31/515,469.68
  6. Step 6: Final answer
    x = 470,426.61

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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.