Home / 8,979,890.31-12,392,259.86-5,112,411.39

Finding the Fourth Proportional to 8,979,890.31, 12,392,259.86 and 5,112,411.39

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Solution

The fourth proportional to 8,979,890.31, 12,392,259.86 and 5,112,411.39 is: 7,055,134.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979,890.31 : 12,392,259.86 = 5,112,411.39 : x
  2. Step 2: Convert to fraction form
    8,979,890.31/12,392,259.86 = 5,112,411.39/x
  3. Step 3: Cross multiply
    8,979,890.31x = 12,392,259.86 × 5,112,411.39
  4. Step 4: Simplify right side
    8,979,890.31x = 63,354,330,468,884.84
  5. Step 5: Solve for x
    x = 63,354,330,468,884.84/8,979,890.31
  6. Step 6: Final answer
    x = 7,055,134.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.