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Finding the Fourth Proportional to 640,499.64, 883,908.29 and 350,127.25

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Solution

The fourth proportional to 640,499.64, 883,908.29 and 350,127.25 is: 483,185.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,499.64 : 883,908.29 = 350,127.25 : x
  2. Step 2: Convert to fraction form
    640,499.64/883,908.29 = 350,127.25/x
  3. Step 3: Cross multiply
    640,499.64x = 883,908.29 × 350,127.25
  4. Step 4: Simplify right side
    640,499.64x = 309,480,374,410.36
  5. Step 5: Solve for x
    x = 309,480,374,410.36/640,499.64
  6. Step 6: Final answer
    x = 483,185.87

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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.