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Finding the Fourth Proportional to 640,976.20, 884,520.48 and 350,583.10

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Solution

The fourth proportional to 640,976.20, 884,520.48 and 350,583.10 is: 483,790.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,976.20 : 884,520.48 = 350,583.10 : x
  2. Step 2: Convert to fraction form
    640,976.20/884,520.48 = 350,583.10/x
  3. Step 3: Cross multiply
    640,976.20x = 884,520.48 × 350,583.10
  4. Step 4: Simplify right side
    640,976.20x = 310,097,931,891.89
  5. Step 5: Solve for x
    x = 310,097,931,891.89/640,976.20
  6. Step 6: Final answer
    x = 483,790.09

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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.