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Finding the Fourth Proportional to 505,424.60, 756,063.30 and 455,658.20

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Solution

The fourth proportional to 505,424.60, 756,063.30 and 455,658.20 is: 681,617.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,424.60 : 756,063.30 = 455,658.20 : x
  2. Step 2: Convert to fraction form
    505,424.60/756,063.30 = 455,658.20/x
  3. Step 3: Cross multiply
    505,424.60x = 756,063.30 × 455,658.20
  4. Step 4: Simplify right side
    505,424.60x = 344,506,442,364.06
  5. Step 5: Solve for x
    x = 344,506,442,364.06/505,424.60
  6. Step 6: Final answer
    x = 681,617.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.