Home / 686,510.40-1,030,456.80-331,809.60

Finding the Fourth Proportional to 686,510.40, 1,030,456.80 and 331,809.60

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Solution

The fourth proportional to 686,510.40, 1,030,456.80 and 331,809.60 is: 498,048.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,510.40 : 1,030,456.80 = 331,809.60 : x
  2. Step 2: Convert to fraction form
    686,510.40/1,030,456.80 = 331,809.60/x
  3. Step 3: Cross multiply
    686,510.40x = 1,030,456.80 × 331,809.60
  4. Step 4: Simplify right side
    686,510.40x = 341,915,458,625.28
  5. Step 5: Solve for x
    x = 341,915,458,625.28/686,510.40
  6. Step 6: Final answer
    x = 498,048.48

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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.