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Finding the Fourth Proportional to 640,498.18, 883,891.02 and 350,110.22

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Solution

The fourth proportional to 640,498.18, 883,891.02 and 350,110.22 is: 483,154.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,498.18 : 883,891.02 = 350,110.22 : x
  2. Step 2: Convert to fraction form
    640,498.18/883,891.02 = 350,110.22/x
  3. Step 3: Cross multiply
    640,498.18x = 883,891.02 × 350,110.22
  4. Step 4: Simplify right side
    640,498.18x = 309,459,279,468.22
  5. Step 5: Solve for x
    x = 309,459,279,468.22/640,498.18
  6. Step 6: Final answer
    x = 483,154.03

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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.