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Finding the Fourth Proportional to 505,365.40, 697,404.72 and 279,010.92

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Solution

The fourth proportional to 505,365.40, 697,404.72 and 279,010.92 is: 385,035.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,365.40 : 697,404.72 = 279,010.92 : x
  2. Step 2: Convert to fraction form
    505,365.40/697,404.72 = 279,010.92/x
  3. Step 3: Cross multiply
    505,365.40x = 697,404.72 × 279,010.92
  4. Step 4: Simplify right side
    505,365.40x = 194,583,532,539.54
  5. Step 5: Solve for x
    x = 194,583,532,539.54/505,365.40
  6. Step 6: Final answer
    x = 385,035.33

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1.5x scale

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.