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Finding the Fourth Proportional to 506,858.05, 699,388.86 and 307,843.70

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Solution

The fourth proportional to 506,858.05, 699,388.86 and 307,843.70 is: 424,778.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,858.05 : 699,388.86 = 307,843.70 : x
  2. Step 2: Convert to fraction form
    506,858.05/699,388.86 = 307,843.70/x
  3. Step 3: Cross multiply
    506,858.05x = 699,388.86 × 307,843.70
  4. Step 4: Simplify right side
    506,858.05x = 215,302,449,365.02
  5. Step 5: Solve for x
    x = 215,302,449,365.02/506,858.05
  6. Step 6: Final answer
    x = 424,778.60

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1.5x scale

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.