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Finding the Fourth Proportional to 457,252.05, 685,189.29 and 407,421.39

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Solution

The fourth proportional to 457,252.05, 685,189.29 and 407,421.39 is: 610,518.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,252.05 : 685,189.29 = 407,421.39 : x
  2. Step 2: Convert to fraction form
    457,252.05/685,189.29 = 407,421.39/x
  3. Step 3: Cross multiply
    457,252.05x = 685,189.29 × 407,421.39
  4. Step 4: Simplify right side
    457,252.05x = 279,160,772,944.91
  5. Step 5: Solve for x
    x = 279,160,772,944.91/457,252.05
  6. Step 6: Final answer
    x = 610,518.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.