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Finding the Fourth Proportional to 662,988.30, 995,349.69 and 393,608.22

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Solution

The fourth proportional to 662,988.30, 995,349.69 and 393,608.22 is: 590,927.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,988.30 : 995,349.69 = 393,608.22 : x
  2. Step 2: Convert to fraction form
    662,988.30/995,349.69 = 393,608.22/x
  3. Step 3: Cross multiply
    662,988.30x = 995,349.69 × 393,608.22
  4. Step 4: Simplify right side
    662,988.30x = 391,777,819,758.45
  5. Step 5: Solve for x
    x = 391,777,819,758.45/662,988.30
  6. Step 6: Final answer
    x = 590,927.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.