Home / 724,156.20-1,086,234.30-643,285.80

Finding the Fourth Proportional to 724,156.20, 1,086,234.30 and 643,285.80

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Solution

The fourth proportional to 724,156.20, 1,086,234.30 and 643,285.80 is: 964,928.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,156.20 : 1,086,234.30 = 643,285.80 : x
  2. Step 2: Convert to fraction form
    724,156.20/1,086,234.30 = 643,285.80/x
  3. Step 3: Cross multiply
    724,156.20x = 1,086,234.30 × 643,285.80
  4. Step 4: Simplify right side
    724,156.20x = 698,759,100,662.94
  5. Step 5: Solve for x
    x = 698,759,100,662.94/724,156.20
  6. Step 6: Final answer
    x = 964,928.70

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Double scale
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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.