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Finding the Fourth Proportional to 707,356.56, 1,061,229.12 and 208,720.56

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Solution

The fourth proportional to 707,356.56, 1,061,229.12 and 208,720.56 is: 313,138.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,356.56 : 1,061,229.12 = 208,720.56 : x
  2. Step 2: Convert to fraction form
    707,356.56/1,061,229.12 = 208,720.56/x
  3. Step 3: Cross multiply
    707,356.56x = 1,061,229.12 × 208,720.56
  4. Step 4: Simplify right side
    707,356.56x = 221,500,336,214.71
  5. Step 5: Solve for x
    x = 221,500,336,214.71/707,356.56
  6. Step 6: Final answer
    x = 313,138.17

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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.