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Finding the Fourth Proportional to 505,008.62, 697,835.68 and 480,407.30

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Solution

The fourth proportional to 505,008.62, 697,835.68 and 480,407.30 is: 663,840.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,008.62 : 697,835.68 = 480,407.30 : x
  2. Step 2: Convert to fraction form
    505,008.62/697,835.68 = 480,407.30/x
  3. Step 3: Cross multiply
    505,008.62x = 697,835.68 × 480,407.30
  4. Step 4: Simplify right side
    505,008.62x = 335,245,350,182.27
  5. Step 5: Solve for x
    x = 335,245,350,182.27/505,008.62
  6. Step 6: Final answer
    x = 663,840.85

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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.