Home / 860,829.20-1,291,243.80-261,785.60

Finding the Fourth Proportional to 860,829.20, 1,291,243.80 and 261,785.60

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Solution

The fourth proportional to 860,829.20, 1,291,243.80 and 261,785.60 is: 392,678.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,829.20 : 1,291,243.80 = 261,785.60 : x
  2. Step 2: Convert to fraction form
    860,829.20/1,291,243.80 = 261,785.60/x
  3. Step 3: Cross multiply
    860,829.20x = 1,291,243.80 × 261,785.60
  4. Step 4: Simplify right side
    860,829.20x = 338,029,032,929.28
  5. Step 5: Solve for x
    x = 338,029,032,929.28/860,829.20
  6. Step 6: Final answer
    x = 392,678.40

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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.