Home / 642,391.20-963,586.80-603,025.20

Finding the Fourth Proportional to 642,391.20, 963,586.80 and 603,025.20

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Solution

The fourth proportional to 642,391.20, 963,586.80 and 603,025.20 is: 904,537.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,391.20 : 963,586.80 = 603,025.20 : x
  2. Step 2: Convert to fraction form
    642,391.20/963,586.80 = 603,025.20/x
  3. Step 3: Cross multiply
    642,391.20x = 963,586.80 × 603,025.20
  4. Step 4: Simplify right side
    642,391.20x = 581,067,122,787.36
  5. Step 5: Solve for x
    x = 581,067,122,787.36/642,391.20
  6. Step 6: Final answer
    x = 904,537.80

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Double scale
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Similar ratio
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1.5x scale

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.