Home / 919,604.72-1,268,637.68-664,551.92

Finding the Fourth Proportional to 919,604.72, 1,268,637.68 and 664,551.92

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Solution

The fourth proportional to 919,604.72, 1,268,637.68 and 664,551.92 is: 916,780.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,604.72 : 1,268,637.68 = 664,551.92 : x
  2. Step 2: Convert to fraction form
    919,604.72/1,268,637.68 = 664,551.92/x
  3. Step 3: Cross multiply
    919,604.72x = 1,268,637.68 × 664,551.92
  4. Step 4: Simplify right side
    919,604.72x = 843,075,606,028.35
  5. Step 5: Solve for x
    x = 843,075,606,028.35/919,604.72
  6. Step 6: Final answer
    x = 916,780.42

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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.