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Finding the Fourth Proportional to 559,748.07, 771,841.89 and 378,144.68

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Solution

The fourth proportional to 559,748.07, 771,841.89 and 378,144.68 is: 521,427.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,748.07 : 771,841.89 = 378,144.68 : x
  2. Step 2: Convert to fraction form
    559,748.07/771,841.89 = 378,144.68/x
  3. Step 3: Cross multiply
    559,748.07x = 771,841.89 × 378,144.68
  4. Step 4: Simplify right side
    559,748.07x = 291,867,901,752.71
  5. Step 5: Solve for x
    x = 291,867,901,752.71/559,748.07
  6. Step 6: Final answer
    x = 521,427.26

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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.