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Finding the Fourth Proportional to 607,417.76, 911,682.84 and 308,105.12

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Solution

The fourth proportional to 607,417.76, 911,682.84 and 308,105.12 is: 462,439.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,417.76 : 911,682.84 = 308,105.12 : x
  2. Step 2: Convert to fraction form
    607,417.76/911,682.84 = 308,105.12/x
  3. Step 3: Cross multiply
    607,417.76x = 911,682.84 × 308,105.12
  4. Step 4: Simplify right side
    607,417.76x = 280,894,150,820.14
  5. Step 5: Solve for x
    x = 280,894,150,820.14/607,417.76
  6. Step 6: Final answer
    x = 462,439.81

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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.