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Finding the Fourth Proportional to 665,246.70, 994,225.31 and 485,710.64

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Solution

The fourth proportional to 665,246.70, 994,225.31 and 485,710.64 is: 725,904.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,246.70 : 994,225.31 = 485,710.64 : x
  2. Step 2: Convert to fraction form
    665,246.70/994,225.31 = 485,710.64/x
  3. Step 3: Cross multiply
    665,246.70x = 994,225.31 × 485,710.64
  4. Step 4: Simplify right side
    665,246.70x = 482,905,811,624.30
  5. Step 5: Solve for x
    x = 482,905,811,624.30/665,246.70
  6. Step 6: Final answer
    x = 725,904.86

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.