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Finding the Fourth Proportional to 426,482.74, 639,898.13 and 274,759.11

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Solution

The fourth proportional to 426,482.74, 639,898.13 and 274,759.11 is: 412,250.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,482.74 : 639,898.13 = 274,759.11 : x
  2. Step 2: Convert to fraction form
    426,482.74/639,898.13 = 274,759.11/x
  3. Step 3: Cross multiply
    426,482.74x = 639,898.13 × 274,759.11
  4. Step 4: Simplify right side
    426,482.74x = 175,817,841,630.56
  5. Step 5: Solve for x
    x = 175,817,841,630.56/426,482.74
  6. Step 6: Final answer
    x = 412,250.77

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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.