Home / 686,284.72-947,072.28-384,480.88

Finding the Fourth Proportional to 686,284.72, 947,072.28 and 384,480.88

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Solution

The fourth proportional to 686,284.72, 947,072.28 and 384,480.88 is: 530,583.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,284.72 : 947,072.28 = 384,480.88 : x
  2. Step 2: Convert to fraction form
    686,284.72/947,072.28 = 384,480.88/x
  3. Step 3: Cross multiply
    686,284.72x = 947,072.28 × 384,480.88
  4. Step 4: Simplify right side
    686,284.72x = 364,131,183,638.01
  5. Step 5: Solve for x
    x = 364,131,183,638.01/686,284.72
  6. Step 6: Final answer
    x = 530,583.26

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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.