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Finding the Fourth Proportional to 834,856.76, 1,252,488.94 and 266,237.86

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Solution

The fourth proportional to 834,856.76, 1,252,488.94 and 266,237.86 is: 399,421.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    834,856.76 : 1,252,488.94 = 266,237.86 : x
  2. Step 2: Convert to fraction form
    834,856.76/1,252,488.94 = 266,237.86/x
  3. Step 3: Cross multiply
    834,856.76x = 1,252,488.94 × 266,237.86
  4. Step 4: Simplify right side
    834,856.76x = 333,459,975,059.27
  5. Step 5: Solve for x
    x = 333,459,975,059.27/834,856.76
  6. Step 6: Final answer
    x = 399,421.78

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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.