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Finding the Fourth Proportional to 559,761.44, 771,860.32 and 378,158.04

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Solution

The fourth proportional to 559,761.44, 771,860.32 and 378,158.04 is: 521,445.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,761.44 : 771,860.32 = 378,158.04 : x
  2. Step 2: Convert to fraction form
    559,761.44/771,860.32 = 378,158.04/x
  3. Step 3: Cross multiply
    559,761.44x = 771,860.32 × 378,158.04
  4. Step 4: Simplify right side
    559,761.44x = 291,885,184,819.58
  5. Step 5: Solve for x
    x = 291,885,184,819.58/559,761.44
  6. Step 6: Final answer
    x = 521,445.68

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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.