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Finding the Fourth Proportional to 12,887,856.80, 19,331,347.80 and 3,303,329.30

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Solution

The fourth proportional to 12,887,856.80, 19,331,347.80 and 3,303,329.30 is: 4,954,881.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887,856.80 : 19,331,347.80 = 3,303,329.30 : x
  2. Step 2: Convert to fraction form
    12,887,856.80/19,331,347.80 = 3,303,329.30/x
  3. Step 3: Cross multiply
    12,887,856.80x = 19,331,347.80 × 3,303,329.30
  4. Step 4: Simplify right side
    12,887,856.80x = 63,857,807,596,230.54
  5. Step 5: Solve for x
    x = 63,857,807,596,230.54/12,887,856.80
  6. Step 6: Final answer
    x = 4,954,881.84

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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.