Home / 699,486.18-965,269.35-393,579.69

Finding the Fourth Proportional to 699,486.18, 965,269.35 and 393,579.69

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Solution

The fourth proportional to 699,486.18, 965,269.35 and 393,579.69 is: 543,127.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,486.18 : 965,269.35 = 393,579.69 : x
  2. Step 2: Convert to fraction form
    699,486.18/965,269.35 = 393,579.69/x
  3. Step 3: Cross multiply
    699,486.18x = 965,269.35 × 393,579.69
  4. Step 4: Simplify right side
    699,486.18x = 379,910,411,539.50
  5. Step 5: Solve for x
    x = 379,910,411,539.50/699,486.18
  6. Step 6: Final answer
    x = 543,127.83

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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.