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Finding the Fourth Proportional to 577,776.88, 797,442.42 and 387,122.68

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Solution

The fourth proportional to 577,776.88, 797,442.42 and 387,122.68 is: 534,303.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,776.88 : 797,442.42 = 387,122.68 : x
  2. Step 2: Convert to fraction form
    577,776.88/797,442.42 = 387,122.68/x
  3. Step 3: Cross multiply
    577,776.88x = 797,442.42 × 387,122.68
  4. Step 4: Simplify right side
    577,776.88x = 308,708,046,776.09
  5. Step 5: Solve for x
    x = 308,708,046,776.09/577,776.88
  6. Step 6: Final answer
    x = 534,303.22

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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.