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Finding the Fourth Proportional to 12,456,502.40, 18,689,419.20 and 4,888,899.20

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Solution

The fourth proportional to 12,456,502.40, 18,689,419.20 and 4,888,899.20 is: 7,335,179.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456,502.40 : 18,689,419.20 = 4,888,899.20 : x
  2. Step 2: Convert to fraction form
    12,456,502.40/18,689,419.20 = 4,888,899.20/x
  3. Step 3: Cross multiply
    12,456,502.40x = 18,689,419.20 × 4,888,899.20
  4. Step 4: Simplify right side
    12,456,502.40x = 91,370,686,575,344.64
  5. Step 5: Solve for x
    x = 91,370,686,575,344.64/12,456,502.40
  6. Step 6: Final answer
    x = 7,335,179.94

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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.