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Finding the Fourth Proportional to 640,488.96, 883,878.24 and 350,100.94

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Solution

The fourth proportional to 640,488.96, 883,878.24 and 350,100.94 is: 483,141.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,488.96 : 883,878.24 = 350,100.94 : x
  2. Step 2: Convert to fraction form
    640,488.96/883,878.24 = 350,100.94/x
  3. Step 3: Cross multiply
    640,488.96x = 883,878.24 × 350,100.94
  4. Step 4: Simplify right side
    640,488.96x = 309,446,602,669.55
  5. Step 5: Solve for x
    x = 309,446,602,669.55/640,488.96
  6. Step 6: Final answer
    x = 483,141.20

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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.