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Finding the Fourth Proportional to 645,806.84, 968,711.08 and 308,768.28

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Solution

The fourth proportional to 645,806.84, 968,711.08 and 308,768.28 is: 463,152.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,806.84 : 968,711.08 = 308,768.28 : x
  2. Step 2: Convert to fraction form
    645,806.84/968,711.08 = 308,768.28/x
  3. Step 3: Cross multiply
    645,806.84x = 968,711.08 × 308,768.28
  4. Step 4: Simplify right side
    645,806.84x = 299,107,253,988.54
  5. Step 5: Solve for x
    x = 299,107,253,988.54/645,806.84
  6. Step 6: Final answer
    x = 463,152.81

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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.