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Finding the Fourth Proportional to 578,990.88, 798,777.48 and 361,071.36

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Solution

The fourth proportional to 578,990.88, 798,777.48 and 361,071.36 is: 498,135.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,990.88 : 798,777.48 = 361,071.36 : x
  2. Step 2: Convert to fraction form
    578,990.88/798,777.48 = 361,071.36/x
  3. Step 3: Cross multiply
    578,990.88x = 798,777.48 × 361,071.36
  4. Step 4: Simplify right side
    578,990.88x = 288,415,671,040.97
  5. Step 5: Solve for x
    x = 288,415,671,040.97/578,990.88
  6. Step 6: Final answer
    x = 498,135.08

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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.