Home / 686,369.21-947,187.87-376,271.25

Finding the Fourth Proportional to 686,369.21, 947,187.87 and 376,271.25

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Solution

The fourth proportional to 686,369.21, 947,187.87 and 376,271.25 is: 519,253.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,369.21 : 947,187.87 = 376,271.25 : x
  2. Step 2: Convert to fraction form
    686,369.21/947,187.87 = 376,271.25/x
  3. Step 3: Cross multiply
    686,369.21x = 947,187.87 × 376,271.25
  4. Step 4: Simplify right side
    686,369.21x = 356,399,563,829.74
  5. Step 5: Solve for x
    x = 356,399,563,829.74/686,369.21
  6. Step 6: Final answer
    x = 519,253.43

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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.