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Finding the Fourth Proportional to 640,502.30, 883,877.76 and 350,100.83

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Solution

The fourth proportional to 640,502.30, 883,877.76 and 350,100.83 is: 483,130.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,502.30 : 883,877.76 = 350,100.83 : x
  2. Step 2: Convert to fraction form
    640,502.30/883,877.76 = 350,100.83/x
  3. Step 3: Cross multiply
    640,502.30x = 883,877.76 × 350,100.83
  4. Step 4: Simplify right side
    640,502.30x = 309,446,337,394.54
  5. Step 5: Solve for x
    x = 309,446,337,394.54/640,502.30
  6. Step 6: Final answer
    x = 483,130.72

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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.