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Finding the Fourth Proportional to 640,385.10, 883,734.17 and 350,002.53

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Solution

The fourth proportional to 640,385.10, 883,734.17 and 350,002.53 is: 483,004.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,385.10 : 883,734.17 = 350,002.53 : x
  2. Step 2: Convert to fraction form
    640,385.10/883,734.17 = 350,002.53/x
  3. Step 3: Cross multiply
    640,385.10x = 883,734.17 × 350,002.53
  4. Step 4: Simplify right side
    640,385.10x = 309,309,193,597.44
  5. Step 5: Solve for x
    x = 309,309,193,597.44/640,385.10
  6. Step 6: Final answer
    x = 483,004.98

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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.