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Finding the Fourth Proportional to 576,430.78, 795,487.89 and 361,579.90

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Solution

The fourth proportional to 576,430.78, 795,487.89 and 361,579.90 is: 498,988.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,430.78 : 795,487.89 = 361,579.90 : x
  2. Step 2: Convert to fraction form
    576,430.78/795,487.89 = 361,579.90/x
  3. Step 3: Cross multiply
    576,430.78x = 795,487.89 × 361,579.90
  4. Step 4: Simplify right side
    576,430.78x = 287,632,431,717.41
  5. Step 5: Solve for x
    x = 287,632,431,717.41/576,430.78
  6. Step 6: Final answer
    x = 498,988.68

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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.