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Finding the Fourth Proportional to 523,478.79, 722,216.72 and 342,296.78

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Solution

The fourth proportional to 523,478.79, 722,216.72 and 342,296.78 is: 472,249.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,478.79 : 722,216.72 = 342,296.78 : x
  2. Step 2: Convert to fraction form
    523,478.79/722,216.72 = 342,296.78/x
  3. Step 3: Cross multiply
    523,478.79x = 722,216.72 × 342,296.78
  4. Step 4: Simplify right side
    523,478.79x = 247,212,452,395.59
  5. Step 5: Solve for x
    x = 247,212,452,395.59/523,478.79
  6. Step 6: Final answer
    x = 472,249.22

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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.