Home / 668,328.80-1,002,493.20-402,608.30

Finding the Fourth Proportional to 668,328.80, 1,002,493.20 and 402,608.30

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Solution

The fourth proportional to 668,328.80, 1,002,493.20 and 402,608.30 is: 603,912.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,328.80 : 1,002,493.20 = 402,608.30 : x
  2. Step 2: Convert to fraction form
    668,328.80/1,002,493.20 = 402,608.30/x
  3. Step 3: Cross multiply
    668,328.80x = 1,002,493.20 × 402,608.30
  4. Step 4: Simplify right side
    668,328.80x = 403,612,083,013.56
  5. Step 5: Solve for x
    x = 403,612,083,013.56/668,328.80
  6. Step 6: Final answer
    x = 603,912.45

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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.