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Finding the Fourth Proportional to 12,672,844.40, 19,009,266.60 and 4,153,458.80

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Solution

The fourth proportional to 12,672,844.40, 19,009,266.60 and 4,153,458.80 is: 6,230,188.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672,844.40 : 19,009,266.60 = 4,153,458.80 : x
  2. Step 2: Convert to fraction form
    12,672,844.40/19,009,266.60 = 4,153,458.80/x
  3. Step 3: Cross multiply
    12,672,844.40x = 19,009,266.60 × 4,153,458.80
  4. Step 4: Simplify right side
    12,672,844.40x = 78,954,205,641,316.08
  5. Step 5: Solve for x
    x = 78,954,205,641,316.08/12,672,844.40
  6. Step 6: Final answer
    x = 6,230,188.20

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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.