Home / 621,942.46-858,138.59-349,911.10

Finding the Fourth Proportional to 621,942.46, 858,138.59 and 349,911.10

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Solution

The fourth proportional to 621,942.46, 858,138.59 and 349,911.10 is: 482,797.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,942.46 : 858,138.59 = 349,911.10 : x
  2. Step 2: Convert to fraction form
    621,942.46/858,138.59 = 349,911.10/x
  3. Step 3: Cross multiply
    621,942.46x = 858,138.59 × 349,911.10
  4. Step 4: Simplify right side
    621,942.46x = 300,272,213,688.66
  5. Step 5: Solve for x
    x = 300,272,213,688.66/621,942.46
  6. Step 6: Final answer
    x = 482,797.42

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.