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Finding the Fourth Proportional to 680,987.39, 939,805.26 and 375,063.71

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Solution

The fourth proportional to 680,987.39, 939,805.26 and 375,063.71 is: 517,611.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,987.39 : 939,805.26 = 375,063.71 : x
  2. Step 2: Convert to fraction form
    680,987.39/939,805.26 = 375,063.71/x
  3. Step 3: Cross multiply
    680,987.39x = 939,805.26 × 375,063.71
  4. Step 4: Simplify right side
    680,987.39x = 352,486,841,387.60
  5. Step 5: Solve for x
    x = 352,486,841,387.60/680,987.39
  6. Step 6: Final answer
    x = 517,611.41

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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.