Home / 873,780.40-1,308,046.20-518,611.60

Finding the Fourth Proportional to 873,780.40, 1,308,046.20 and 518,611.60

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Solution

The fourth proportional to 873,780.40, 1,308,046.20 and 518,611.60 is: 776,359.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,780.40 : 1,308,046.20 = 518,611.60 : x
  2. Step 2: Convert to fraction form
    873,780.40/1,308,046.20 = 518,611.60/x
  3. Step 3: Cross multiply
    873,780.40x = 1,308,046.20 × 518,611.60
  4. Step 4: Simplify right side
    873,780.40x = 678,367,932,655.92
  5. Step 5: Solve for x
    x = 678,367,932,655.92/873,780.40
  6. Step 6: Final answer
    x = 776,359.75

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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.