Home / 1,328,640.30-1,992,960.45-921,202.20

Finding the Fourth Proportional to 1,328,640.30, 1,992,960.45 and 921,202.20

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Solution

The fourth proportional to 1,328,640.30, 1,992,960.45 and 921,202.20 is: 1,381,803.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,640.30 : 1,992,960.45 = 921,202.20 : x
  2. Step 2: Convert to fraction form
    1,328,640.30/1,992,960.45 = 921,202.20/x
  3. Step 3: Cross multiply
    1,328,640.30x = 1,992,960.45 × 921,202.20
  4. Step 4: Simplify right side
    1,328,640.30x = 1,835,919,551,052.99
  5. Step 5: Solve for x
    x = 1,835,919,551,052.99/1,328,640.30
  6. Step 6: Final answer
    x = 1,381,803.30

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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.