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Finding the Fourth Proportional to 640,630.56, 884,072.97 and 350,248.26

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Solution

The fourth proportional to 640,630.56, 884,072.97 and 350,248.26 is: 483,344.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,630.56 : 884,072.97 = 350,248.26 : x
  2. Step 2: Convert to fraction form
    640,630.56/884,072.97 = 350,248.26/x
  3. Step 3: Cross multiply
    640,630.56x = 884,072.97 × 350,248.26
  4. Step 4: Simplify right side
    640,630.56x = 309,645,019,455.53
  5. Step 5: Solve for x
    x = 309,645,019,455.53/640,630.56
  6. Step 6: Final answer
    x = 483,344.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.