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Finding the Fourth Proportional to 559,771.56, 771,874.28 and 378,168.16

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Solution

The fourth proportional to 559,771.56, 771,874.28 and 378,168.16 is: 521,459.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,771.56 : 771,874.28 = 378,168.16 : x
  2. Step 2: Convert to fraction form
    559,771.56/771,874.28 = 378,168.16/x
  3. Step 3: Cross multiply
    559,771.56x = 771,874.28 × 378,168.16
  4. Step 4: Simplify right side
    559,771.56x = 291,898,276,218.93
  5. Step 5: Solve for x
    x = 291,898,276,218.93/559,771.56
  6. Step 6: Final answer
    x = 521,459.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.