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Finding the Fourth Proportional to 640,029.64, 883,241.40 and 349,645.18

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Solution

The fourth proportional to 640,029.64, 883,241.40 and 349,645.18 is: 482,510.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,029.64 : 883,241.40 = 349,645.18 : x
  2. Step 2: Convert to fraction form
    640,029.64/883,241.40 = 349,645.18/x
  3. Step 3: Cross multiply
    640,029.64x = 883,241.40 × 349,645.18
  4. Step 4: Simplify right side
    640,029.64x = 308,821,098,286.45
  5. Step 5: Solve for x
    x = 308,821,098,286.45/640,029.64
  6. Step 6: Final answer
    x = 482,510.62

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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.