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Finding the Fourth Proportional to 686,231.10, 958,857.30 and 686,231.10

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Solution

The fourth proportional to 686,231.10, 958,857.30 and 686,231.10 is: 958,857.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,231.10 : 958,857.30 = 686,231.10 : x
  2. Step 2: Convert to fraction form
    686,231.10/958,857.30 = 686,231.10/x
  3. Step 3: Cross multiply
    686,231.10x = 958,857.30 × 686,231.10
  4. Step 4: Simplify right side
    686,231.10x = 657,997,699,722.03
  5. Step 5: Solve for x
    x = 657,997,699,722.03/686,231.10
  6. Step 6: Final answer
    x = 958,857.30

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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.