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Finding the Fourth Proportional to 518,963.42, 715,533.26 and 426,760.50

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Solution

The fourth proportional to 518,963.42, 715,533.26 and 426,760.50 is: 588,406.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,963.42 : 715,533.26 = 426,760.50 : x
  2. Step 2: Convert to fraction form
    518,963.42/715,533.26 = 426,760.50/x
  3. Step 3: Cross multiply
    518,963.42x = 715,533.26 × 426,760.50
  4. Step 4: Simplify right side
    518,963.42x = 305,361,333,893.55
  5. Step 5: Solve for x
    x = 305,361,333,893.55/518,963.42
  6. Step 6: Final answer
    x = 588,406.27

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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.