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Finding the Fourth Proportional to 505,118.52, 697,060.34 and 278,764.04

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Solution

The fourth proportional to 505,118.52, 697,060.34 and 278,764.04 is: 384,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,118.52 : 697,060.34 = 278,764.04 : x
  2. Step 2: Convert to fraction form
    505,118.52/697,060.34 = 278,764.04/x
  3. Step 3: Cross multiply
    505,118.52x = 697,060.34 × 278,764.04
  4. Step 4: Simplify right side
    505,118.52x = 194,315,356,502.17
  5. Step 5: Solve for x
    x = 194,315,356,502.17/505,118.52
  6. Step 6: Final answer
    x = 384,692.60

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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.