Home / 686,611.17-1,029,916.85-213,296.49

Finding the Fourth Proportional to 686,611.17, 1,029,916.85 and 213,296.49

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Solution

The fourth proportional to 686,611.17, 1,029,916.85 and 213,296.49 is: 319,944.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,611.17 : 1,029,916.85 = 213,296.49 : x
  2. Step 2: Convert to fraction form
    686,611.17/1,029,916.85 = 213,296.49/x
  3. Step 3: Cross multiply
    686,611.17x = 1,029,916.85 × 213,296.49
  4. Step 4: Simplify right side
    686,611.17x = 219,677,648,030.37
  5. Step 5: Solve for x
    x = 219,677,648,030.37/686,611.17
  6. Step 6: Final answer
    x = 319,944.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.