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Finding the Fourth Proportional to 640,487.96, 883,876.86 and 350,099.94

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Solution

The fourth proportional to 640,487.96, 883,876.86 and 350,099.94 is: 483,139.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,487.96 : 883,876.86 = 350,099.94 : x
  2. Step 2: Convert to fraction form
    640,487.96/883,876.86 = 350,099.94/x
  3. Step 3: Cross multiply
    640,487.96x = 883,876.86 × 350,099.94
  4. Step 4: Simplify right side
    640,487.96x = 309,445,235,653.39
  5. Step 5: Solve for x
    x = 309,445,235,653.39/640,487.96
  6. Step 6: Final answer
    x = 483,139.82

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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.