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Finding the Fourth Proportional to 519,973.63, 717,497.64 and 305,035.27

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Solution

The fourth proportional to 519,973.63, 717,497.64 and 305,035.27 is: 420,909.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,973.63 : 717,497.64 = 305,035.27 : x
  2. Step 2: Convert to fraction form
    519,973.63/717,497.64 = 305,035.27/x
  3. Step 3: Cross multiply
    519,973.63x = 717,497.64 × 305,035.27
  4. Step 4: Simplify right side
    519,973.63x = 218,862,084,548.02
  5. Step 5: Solve for x
    x = 218,862,084,548.02/519,973.63
  6. Step 6: Final answer
    x = 420,909.97

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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.