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Finding the Fourth Proportional to 1,243,800.63, 1,865,834.28 and 345,246.17

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Solution

The fourth proportional to 1,243,800.63, 1,865,834.28 and 345,246.17 is: 517,906.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,800.63 : 1,865,834.28 = 345,246.17 : x
  2. Step 2: Convert to fraction form
    1,243,800.63/1,865,834.28 = 345,246.17/x
  3. Step 3: Cross multiply
    1,243,800.63x = 1,865,834.28 × 345,246.17
  4. Step 4: Simplify right side
    1,243,800.63x = 644,172,129,695.54
  5. Step 5: Solve for x
    x = 644,172,129,695.54/1,243,800.63
  6. Step 6: Final answer
    x = 517,906.26

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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.