Home / 689,253.30-1,033,880.36-215,975.57

Finding the Fourth Proportional to 689,253.30, 1,033,880.36 and 215,975.57

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Solution

The fourth proportional to 689,253.30, 1,033,880.36 and 215,975.57 is: 323,963.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,253.30 : 1,033,880.36 = 215,975.57 : x
  2. Step 2: Convert to fraction form
    689,253.30/1,033,880.36 = 215,975.57/x
  3. Step 3: Cross multiply
    689,253.30x = 1,033,880.36 × 215,975.57
  4. Step 4: Simplify right side
    689,253.30x = 223,292,893,813.53
  5. Step 5: Solve for x
    x = 223,292,893,813.53/689,253.30
  6. Step 6: Final answer
    x = 323,963.47

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Double scale
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Similar ratio
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1.5x scale

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.