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Finding the Fourth Proportional to 686,687.60, 959,496.40 and 686,687.60

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Solution

The fourth proportional to 686,687.60, 959,496.40 and 686,687.60 is: 959,496.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,687.60 : 959,496.40 = 686,687.60 : x
  2. Step 2: Convert to fraction form
    686,687.60/959,496.40 = 686,687.60/x
  3. Step 3: Cross multiply
    686,687.60x = 959,496.40 × 686,687.60
  4. Step 4: Simplify right side
    686,687.60x = 658,874,280,124.64
  5. Step 5: Solve for x
    x = 658,874,280,124.64/686,687.60
  6. Step 6: Final answer
    x = 959,496.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.