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Finding the Fourth Proportional to 640,167.39, 883,419.48 and 353,706.84

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Solution

The fourth proportional to 640,167.39, 883,419.48 and 353,706.84 is: 488,109.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,167.39 : 883,419.48 = 353,706.84 : x
  2. Step 2: Convert to fraction form
    640,167.39/883,419.48 = 353,706.84/x
  3. Step 3: Cross multiply
    640,167.39x = 883,419.48 × 353,706.84
  4. Step 4: Simplify right side
    640,167.39x = 312,471,512,665.24
  5. Step 5: Solve for x
    x = 312,471,512,665.24/640,167.39
  6. Step 6: Final answer
    x = 488,109.08

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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.