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Finding the Fourth Proportional to 447,801.30, 671,790.54 and 127,956.06

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Solution

The fourth proportional to 447,801.30, 671,790.54 and 127,956.06 is: 191,959.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,801.30 : 671,790.54 = 127,956.06 : x
  2. Step 2: Convert to fraction form
    447,801.30/671,790.54 = 127,956.06/x
  3. Step 3: Cross multiply
    447,801.30x = 671,790.54 × 127,956.06
  4. Step 4: Simplify right side
    447,801.30x = 85,959,670,643.67
  5. Step 5: Solve for x
    x = 85,959,670,643.67/447,801.30
  6. Step 6: Final answer
    x = 191,959.40

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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.