Home / 686,584.60-947,519.22-428,614.36

Finding the Fourth Proportional to 686,584.60, 947,519.22 and 428,614.36

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Solution

The fourth proportional to 686,584.60, 947,519.22 and 428,614.36 is: 591,508.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,584.60 : 947,519.22 = 428,614.36 : x
  2. Step 2: Convert to fraction form
    686,584.60/947,519.22 = 428,614.36/x
  3. Step 3: Cross multiply
    686,584.60x = 947,519.22 × 428,614.36
  4. Step 4: Simplify right side
    686,584.60x = 406,120,344,068.00
  5. Step 5: Solve for x
    x = 406,120,344,068.00/686,584.60
  6. Step 6: Final answer
    x = 591,508.09

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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.