Home / 686,512.40-1,030,459.80-331,811.60

Finding the Fourth Proportional to 686,512.40, 1,030,459.80 and 331,811.60

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Solution

The fourth proportional to 686,512.40, 1,030,459.80 and 331,811.60 is: 498,051.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,512.40 : 1,030,459.80 = 331,811.60 : x
  2. Step 2: Convert to fraction form
    686,512.40/1,030,459.80 = 331,811.60/x
  3. Step 3: Cross multiply
    686,512.40x = 1,030,459.80 × 331,811.60
  4. Step 4: Simplify right side
    686,512.40x = 341,918,514,973.68
  5. Step 5: Solve for x
    x = 341,918,514,973.68/686,512.40
  6. Step 6: Final answer
    x = 498,051.48

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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.