Home / 686,573.40-1,030,151.70-331,404.60

Finding the Fourth Proportional to 686,573.40, 1,030,151.70 and 331,404.60

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Solution

The fourth proportional to 686,573.40, 1,030,151.70 and 331,404.60 is: 497,247.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,573.40 : 1,030,151.70 = 331,404.60 : x
  2. Step 2: Convert to fraction form
    686,573.40/1,030,151.70 = 331,404.60/x
  3. Step 3: Cross multiply
    686,573.40x = 1,030,151.70 × 331,404.60
  4. Step 4: Simplify right side
    686,573.40x = 341,397,012,077.82
  5. Step 5: Solve for x
    x = 341,397,012,077.82/686,573.40
  6. Step 6: Final answer
    x = 497,247.65

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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.