Home / 999,165.75-1,378,765.40-563,559.09

Finding the Fourth Proportional to 999,165.75, 1,378,765.40 and 563,559.09

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Solution

The fourth proportional to 999,165.75, 1,378,765.40 and 563,559.09 is: 777,664.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,165.75 : 1,378,765.40 = 563,559.09 : x
  2. Step 2: Convert to fraction form
    999,165.75/1,378,765.40 = 563,559.09/x
  3. Step 3: Cross multiply
    999,165.75x = 1,378,765.40 × 563,559.09
  4. Step 4: Simplify right side
    999,165.75x = 777,015,771,329.69
  5. Step 5: Solve for x
    x = 777,015,771,329.69/999,165.75
  6. Step 6: Final answer
    x = 777,664.54

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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.