Home / 919,261.89-1,378,893.24-288,224.91

Finding the Fourth Proportional to 919,261.89, 1,378,893.24 and 288,224.91

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Solution

The fourth proportional to 919,261.89, 1,378,893.24 and 288,224.91 is: 432,337.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,261.89 : 1,378,893.24 = 288,224.91 : x
  2. Step 2: Convert to fraction form
    919,261.89/1,378,893.24 = 288,224.91/x
  3. Step 3: Cross multiply
    919,261.89x = 1,378,893.24 × 288,224.91
  4. Step 4: Simplify right side
    919,261.89x = 397,431,379,998.61
  5. Step 5: Solve for x
    x = 397,431,379,998.61/919,261.89
  6. Step 6: Final answer
    x = 432,337.49

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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.