Home / 686,837.48-947,893.94-381,012.38

Finding the Fourth Proportional to 686,837.48, 947,893.94 and 381,012.38

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Solution

The fourth proportional to 686,837.48, 947,893.94 and 381,012.38 is: 525,829.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,837.48 : 947,893.94 = 381,012.38 : x
  2. Step 2: Convert to fraction form
    686,837.48/947,893.94 = 381,012.38/x
  3. Step 3: Cross multiply
    686,837.48x = 947,893.94 × 381,012.38
  4. Step 4: Simplify right side
    686,837.48x = 361,159,329,214.99
  5. Step 5: Solve for x
    x = 361,159,329,214.99/686,837.48
  6. Step 6: Final answer
    x = 525,829.39

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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.