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Finding the Fourth Proportional to 699,455.34, 965,248.40 and 397,649.34

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Solution

The fourth proportional to 699,455.34, 965,248.40 and 397,649.34 is: 548,756.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,455.34 : 965,248.40 = 397,649.34 : x
  2. Step 2: Convert to fraction form
    699,455.34/965,248.40 = 397,649.34/x
  3. Step 3: Cross multiply
    699,455.34x = 965,248.40 × 397,649.34
  4. Step 4: Simplify right side
    699,455.34x = 383,830,389,196.06
  5. Step 5: Solve for x
    x = 383,830,389,196.06/699,455.34
  6. Step 6: Final answer
    x = 548,756.11

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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.