Home / 683,138.20-1,025,484.90-402,813.40

Finding the Fourth Proportional to 683,138.20, 1,025,484.90 and 402,813.40

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Solution

The fourth proportional to 683,138.20, 1,025,484.90 and 402,813.40 is: 604,678.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,138.20 : 1,025,484.90 = 402,813.40 : x
  2. Step 2: Convert to fraction form
    683,138.20/1,025,484.90 = 402,813.40/x
  3. Step 3: Cross multiply
    683,138.20x = 1,025,484.90 × 402,813.40
  4. Step 4: Simplify right side
    683,138.20x = 413,079,059,217.66
  5. Step 5: Solve for x
    x = 413,079,059,217.66/683,138.20
  6. Step 6: Final answer
    x = 604,678.61

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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.