Home / 876,830.40-1,315,245.60-865,020.60

Finding the Fourth Proportional to 876,830.40, 1,315,245.60 and 865,020.60

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Solution

The fourth proportional to 876,830.40, 1,315,245.60 and 865,020.60 is: 1,297,530.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,830.40 : 1,315,245.60 = 865,020.60 : x
  2. Step 2: Convert to fraction form
    876,830.40/1,315,245.60 = 865,020.60/x
  3. Step 3: Cross multiply
    876,830.40x = 1,315,245.60 × 865,020.60
  4. Step 4: Simplify right side
    876,830.40x = 1,137,714,538,059.36
  5. Step 5: Solve for x
    x = 1,137,714,538,059.36/876,830.40
  6. Step 6: Final answer
    x = 1,297,530.90

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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.