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Finding the Fourth Proportional to 701,091, 967,505.58 and 399,313.08

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Solution

The fourth proportional to 701,091, 967,505.58 and 399,313.08 is: 551,052.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    701,091 : 967,505.58 = 399,313.08 : x
  2. Step 2: Convert to fraction form
    701,091/967,505.58 = 399,313.08/x
  3. Step 3: Cross multiply
    701,091x = 967,505.58 × 399,313.08
  4. Step 4: Simplify right side
    701,091x = 386,337,633,066.99
  5. Step 5: Solve for x
    x = 386,337,633,066.99/701,091
  6. Step 6: Final answer
    x = 551,052.05

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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.