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Finding the Fourth Proportional to 523,663.68, 722,621.28 and 308,793.60

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Solution

The fourth proportional to 523,663.68, 722,621.28 and 308,793.60 is: 426,114.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,663.68 : 722,621.28 = 308,793.60 : x
  2. Step 2: Convert to fraction form
    523,663.68/722,621.28 = 308,793.60/x
  3. Step 3: Cross multiply
    523,663.68x = 722,621.28 × 308,793.60
  4. Step 4: Simplify right side
    523,663.68x = 223,140,826,487.81
  5. Step 5: Solve for x
    x = 223,140,826,487.81/523,663.68
  6. Step 6: Final answer
    x = 426,114.77

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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.