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Finding the Fourth Proportional to 527,322.72, 790,978.14 and 127,967.88

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Solution

The fourth proportional to 527,322.72, 790,978.14 and 127,967.88 is: 191,950.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,322.72 : 790,978.14 = 127,967.88 : x
  2. Step 2: Convert to fraction form
    527,322.72/790,978.14 = 127,967.88/x
  3. Step 3: Cross multiply
    527,322.72x = 790,978.14 × 127,967.88
  4. Step 4: Simplify right side
    527,322.72x = 101,219,795,702.14
  5. Step 5: Solve for x
    x = 101,219,795,702.14/527,322.72
  6. Step 6: Final answer
    x = 191,950.38

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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.