Home / 686,664.40-1,030,288.20-331,495.60

Finding the Fourth Proportional to 686,664.40, 1,030,288.20 and 331,495.60

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Solution

The fourth proportional to 686,664.40, 1,030,288.20 and 331,495.60 is: 497,384.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,664.40 : 1,030,288.20 = 331,495.60 : x
  2. Step 2: Convert to fraction form
    686,664.40/1,030,288.20 = 331,495.60/x
  3. Step 3: Cross multiply
    686,664.40x = 1,030,288.20 × 331,495.60
  4. Step 4: Simplify right side
    686,664.40x = 341,536,005,031.92
  5. Step 5: Solve for x
    x = 341,536,005,031.92/686,664.40
  6. Step 6: Final answer
    x = 497,384.17

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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.