Home / 873,297.40-1,307,321.70-518,128.60

Finding the Fourth Proportional to 873,297.40, 1,307,321.70 and 518,128.60

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Solution

The fourth proportional to 873,297.40, 1,307,321.70 and 518,128.60 is: 775,635.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,297.40 : 1,307,321.70 = 518,128.60 : x
  2. Step 2: Convert to fraction form
    873,297.40/1,307,321.70 = 518,128.60/x
  3. Step 3: Cross multiply
    873,297.40x = 1,307,321.70 × 518,128.60
  4. Step 4: Simplify right side
    873,297.40x = 677,360,762,170.62
  5. Step 5: Solve for x
    x = 677,360,762,170.62/873,297.40
  6. Step 6: Final answer
    x = 775,635.84

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1.5x scale

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.