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Finding the Fourth Proportional to 505,943.08, 698,173.98 and 279,574

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Solution

The fourth proportional to 505,943.08, 698,173.98 and 279,574 is: 385,796.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,943.08 : 698,173.98 = 279,574 : x
  2. Step 2: Convert to fraction form
    505,943.08/698,173.98 = 279,574/x
  3. Step 3: Cross multiply
    505,943.08x = 698,173.98 × 279,574
  4. Step 4: Simplify right side
    505,943.08x = 195,191,292,284.52
  5. Step 5: Solve for x
    x = 195,191,292,284.52/505,943.08
  6. Step 6: Final answer
    x = 385,796.94

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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.