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Finding the Fourth Proportional to 608,628.64, 913,334.64 and 328,339.36

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Solution

The fourth proportional to 608,628.64, 913,334.64 and 328,339.36 is: 492,720.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,628.64 : 913,334.64 = 328,339.36 : x
  2. Step 2: Convert to fraction form
    608,628.64/913,334.64 = 328,339.36/x
  3. Step 3: Cross multiply
    608,628.64x = 913,334.64 × 328,339.36
  4. Step 4: Simplify right side
    608,628.64x = 299,883,711,163.43
  5. Step 5: Solve for x
    x = 299,883,711,163.43/608,628.64
  6. Step 6: Final answer
    x = 492,720.34

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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.