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Finding the Fourth Proportional to 485,590.46, 728,595.50 and 260,688.27

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Solution

The fourth proportional to 485,590.46, 728,595.50 and 260,688.27 is: 391,145.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,590.46 : 728,595.50 = 260,688.27 : x
  2. Step 2: Convert to fraction form
    485,590.46/728,595.50 = 260,688.27/x
  3. Step 3: Cross multiply
    485,590.46x = 728,595.50 × 260,688.27
  4. Step 4: Simplify right side
    485,590.46x = 189,936,297,433.53
  5. Step 5: Solve for x
    x = 189,936,297,433.53/485,590.46
  6. Step 6: Final answer
    x = 391,145.04

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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.