Home / 505,263.02-697,238.48-287,451.18

Finding the Fourth Proportional to 505,263.02, 697,238.48 and 287,451.18

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Solution

The fourth proportional to 505,263.02, 697,238.48 and 287,451.18 is: 396,668.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,263.02 : 697,238.48 = 287,451.18 : x
  2. Step 2: Convert to fraction form
    505,263.02/697,238.48 = 287,451.18/x
  3. Step 3: Cross multiply
    505,263.02x = 697,238.48 × 287,451.18
  4. Step 4: Simplify right side
    505,263.02x = 200,422,023,817.41
  5. Step 5: Solve for x
    x = 200,422,023,817.41/505,263.02
  6. Step 6: Final answer
    x = 396,668.70

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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.