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Finding the Fourth Proportional to 640,334.96, 883,665 and 349,952.48

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Solution

The fourth proportional to 640,334.96, 883,665 and 349,952.48 is: 482,935.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,334.96 : 883,665 = 349,952.48 : x
  2. Step 2: Convert to fraction form
    640,334.96/883,665 = 349,952.48/x
  3. Step 3: Cross multiply
    640,334.96x = 883,665 × 349,952.48
  4. Step 4: Simplify right side
    640,334.96x = 309,240,758,239.20
  5. Step 5: Solve for x
    x = 309,240,758,239.20/640,334.96
  6. Step 6: Final answer
    x = 482,935.93

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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.