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Finding the Fourth Proportional to 505,722.20, 758,583.30 and 346,289.90

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Solution

The fourth proportional to 505,722.20, 758,583.30 and 346,289.90 is: 519,434.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,722.20 : 758,583.30 = 346,289.90 : x
  2. Step 2: Convert to fraction form
    505,722.20/758,583.30 = 346,289.90/x
  3. Step 3: Cross multiply
    505,722.20x = 758,583.30 × 346,289.90
  4. Step 4: Simplify right side
    505,722.20x = 262,689,735,098.67
  5. Step 5: Solve for x
    x = 262,689,735,098.67/505,722.20
  6. Step 6: Final answer
    x = 519,434.85

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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.