Home / 1,380,072.64-2,069,408.88-631,477.12

Finding the Fourth Proportional to 1,380,072.64, 2,069,408.88 and 631,477.12

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Solution

The fourth proportional to 1,380,072.64, 2,069,408.88 and 631,477.12 is: 946,895.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,072.64 : 2,069,408.88 = 631,477.12 : x
  2. Step 2: Convert to fraction form
    1,380,072.64/2,069,408.88 = 631,477.12/x
  3. Step 3: Cross multiply
    1,380,072.64x = 2,069,408.88 × 631,477.12
  4. Step 4: Simplify right side
    1,380,072.64x = 1,306,784,359,644.83
  5. Step 5: Solve for x
    x = 1,306,784,359,644.83/1,380,072.64
  6. Step 6: Final answer
    x = 946,895.35

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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.