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Finding the Fourth Proportional to 505,879.83, 698,115.98 and 276,437.12

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Solution

The fourth proportional to 505,879.83, 698,115.98 and 276,437.12 is: 381,484.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,879.83 : 698,115.98 = 276,437.12 : x
  2. Step 2: Convert to fraction form
    505,879.83/698,115.98 = 276,437.12/x
  3. Step 3: Cross multiply
    505,879.83x = 698,115.98 × 276,437.12
  4. Step 4: Simplify right side
    505,879.83x = 192,985,173,373.56
  5. Step 5: Solve for x
    x = 192,985,173,373.56/505,879.83
  6. Step 6: Final answer
    x = 381,484.22

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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.