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Finding the Fourth Proportional to 611,107.75, 843,368.10 and 339,175.65

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Solution

The fourth proportional to 611,107.75, 843,368.10 and 339,175.65 is: 468,084.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,107.75 : 843,368.10 = 339,175.65 : x
  2. Step 2: Convert to fraction form
    611,107.75/843,368.10 = 339,175.65/x
  3. Step 3: Cross multiply
    611,107.75x = 843,368.10 × 339,175.65
  4. Step 4: Simplify right side
    611,107.75x = 286,049,923,506.77
  5. Step 5: Solve for x
    x = 286,049,923,506.77/611,107.75
  6. Step 6: Final answer
    x = 468,084.27

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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.