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Finding the Fourth Proportional to 640,502.20, 883,896.56 and 350,114.20

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Solution

The fourth proportional to 640,502.20, 883,896.56 and 350,114.20 is: 483,159.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,502.20 : 883,896.56 = 350,114.20 : x
  2. Step 2: Convert to fraction form
    640,502.20/883,896.56 = 350,114.20/x
  3. Step 3: Cross multiply
    640,502.20x = 883,896.56 × 350,114.20
  4. Step 4: Simplify right side
    640,502.20x = 309,464,736,987.15
  5. Step 5: Solve for x
    x = 309,464,736,987.15/640,502.20
  6. Step 6: Final answer
    x = 483,159.52

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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.