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Finding the Fourth Proportional to 1,669,748.88, 2,501,284.48 and 769,958.76

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Solution

The fourth proportional to 1,669,748.88, 2,501,284.48 and 769,958.76 is: 1,153,398.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669,748.88 : 2,501,284.48 = 769,958.76 : x
  2. Step 2: Convert to fraction form
    1,669,748.88/2,501,284.48 = 769,958.76/x
  3. Step 3: Cross multiply
    1,669,748.88x = 2,501,284.48 × 769,958.76
  4. Step 4: Simplify right side
    1,669,748.88x = 1,925,885,896,628.05
  5. Step 5: Solve for x
    x = 1,925,885,896,628.05/1,669,748.88
  6. Step 6: Final answer
    x = 1,153,398.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.