Home / 645,791.72-968,688.38-308,753.15

Finding the Fourth Proportional to 645,791.72, 968,688.38 and 308,753.15

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Solution

The fourth proportional to 645,791.72, 968,688.38 and 308,753.15 is: 463,130.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,791.72 : 968,688.38 = 308,753.15 : x
  2. Step 2: Convert to fraction form
    645,791.72/968,688.38 = 308,753.15/x
  3. Step 3: Cross multiply
    645,791.72x = 968,688.38 × 308,753.15
  4. Step 4: Simplify right side
    645,791.72x = 299,085,584,621.84
  5. Step 5: Solve for x
    x = 299,085,584,621.84/645,791.72
  6. Step 6: Final answer
    x = 463,130.10

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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.