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Finding the Fourth Proportional to 699,670.62, 965,534.31 and 389,570.22

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Solution

The fourth proportional to 699,670.62, 965,534.31 and 389,570.22 is: 537,600.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,670.62 : 965,534.31 = 389,570.22 : x
  2. Step 2: Convert to fraction form
    699,670.62/965,534.31 = 389,570.22/x
  3. Step 3: Cross multiply
    699,670.62x = 965,534.31 × 389,570.22
  4. Step 4: Simplify right side
    699,670.62x = 376,143,413,564.25
  5. Step 5: Solve for x
    x = 376,143,413,564.25/699,670.62
  6. Step 6: Final answer
    x = 537,600.70

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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.