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Finding the Fourth Proportional to 559,245.88, 771,495.46 and 378,021.07

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Solution

The fourth proportional to 559,245.88, 771,495.46 and 378,021.07 is: 521,490.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,245.88 : 771,495.46 = 378,021.07 : x
  2. Step 2: Convert to fraction form
    559,245.88/771,495.46 = 378,021.07/x
  3. Step 3: Cross multiply
    559,245.88x = 771,495.46 × 378,021.07
  4. Step 4: Simplify right side
    559,245.88x = 291,641,539,289.34
  5. Step 5: Solve for x
    x = 291,641,539,289.34/559,245.88
  6. Step 6: Final answer
    x = 521,490.72

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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.