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Finding the Fourth Proportional to 676,057.11, 932,969.85 and 370,128.39

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Solution

The fourth proportional to 676,057.11, 932,969.85 and 370,128.39 is: 510,783.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,057.11 : 932,969.85 = 370,128.39 : x
  2. Step 2: Convert to fraction form
    676,057.11/932,969.85 = 370,128.39/x
  3. Step 3: Cross multiply
    676,057.11x = 932,969.85 × 370,128.39
  4. Step 4: Simplify right side
    676,057.11x = 345,318,628,499.04
  5. Step 5: Solve for x
    x = 345,318,628,499.04/676,057.11
  6. Step 6: Final answer
    x = 510,783.22

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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.