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Finding the Fourth Proportional to 876,658.40, 1,314,987.60 and 864,848.60

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Solution

The fourth proportional to 876,658.40, 1,314,987.60 and 864,848.60 is: 1,297,272.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,658.40 : 1,314,987.60 = 864,848.60 : x
  2. Step 2: Convert to fraction form
    876,658.40/1,314,987.60 = 864,848.60/x
  3. Step 3: Cross multiply
    876,658.40x = 1,314,987.60 × 864,848.60
  4. Step 4: Simplify right side
    876,658.40x = 1,137,265,184,877.36
  5. Step 5: Solve for x
    x = 1,137,265,184,877.36/876,658.40
  6. Step 6: Final answer
    x = 1,297,272.90

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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.