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Finding the Fourth Proportional to 505,559.82, 697,637.43 and 279,187.50

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Solution

The fourth proportional to 505,559.82, 697,637.43 and 279,187.50 is: 385,259.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,559.82 : 697,637.43 = 279,187.50 : x
  2. Step 2: Convert to fraction form
    505,559.82/697,637.43 = 279,187.50/x
  3. Step 3: Cross multiply
    505,559.82x = 697,637.43 × 279,187.50
  4. Step 4: Simplify right side
    505,559.82x = 194,771,649,988.13
  5. Step 5: Solve for x
    x = 194,771,649,988.13/505,559.82
  6. Step 6: Final answer
    x = 385,259.35

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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.