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Finding the Fourth Proportional to 577,812, 797,490.72 and 387,157.92

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Solution

The fourth proportional to 577,812, 797,490.72 and 387,157.92 is: 534,351.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,812 : 797,490.72 = 387,157.92 : x
  2. Step 2: Convert to fraction form
    577,812/797,490.72 = 387,157.92/x
  3. Step 3: Cross multiply
    577,812x = 797,490.72 × 387,157.92
  4. Step 4: Simplify right side
    577,812x = 308,754,848,374.50
  5. Step 5: Solve for x
    x = 308,754,848,374.50/577,812
  6. Step 6: Final answer
    x = 534,351.74

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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.