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Finding the Fourth Proportional to 640,107.16, 883,360.59 and 349,736.71

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Solution

The fourth proportional to 640,107.16, 883,360.59 and 349,736.71 is: 482,643.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,107.16 : 883,360.59 = 349,736.71 : x
  2. Step 2: Convert to fraction form
    640,107.16/883,360.59 = 349,736.71/x
  3. Step 3: Cross multiply
    640,107.16x = 883,360.59 × 349,736.71
  4. Step 4: Simplify right side
    640,107.16x = 308,943,623,251.56
  5. Step 5: Solve for x
    x = 308,943,623,251.56/640,107.16
  6. Step 6: Final answer
    x = 482,643.60

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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.