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Finding the Fourth Proportional to 12,798,368.70, 19,200,177.45 and 4,284,815.10

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Solution

The fourth proportional to 12,798,368.70, 19,200,177.45 and 4,284,815.10 is: 6,428,101.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,798,368.70 : 19,200,177.45 = 4,284,815.10 : x
  2. Step 2: Convert to fraction form
    12,798,368.70/19,200,177.45 = 4,284,815.10/x
  3. Step 3: Cross multiply
    12,798,368.70x = 19,200,177.45 × 4,284,815.10
  4. Step 4: Simplify right side
    12,798,368.70x = 82,269,210,260,439.48
  5. Step 5: Solve for x
    x = 82,269,210,260,439.48/12,798,368.70
  6. Step 6: Final answer
    x = 6,428,101.28

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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.