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Finding the Fourth Proportional to 7,976,663.76, 11,966,572.92 and 2,928,018

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Solution

The fourth proportional to 7,976,663.76, 11,966,572.92 and 2,928,018 is: 4,392,605.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,976,663.76 : 11,966,572.92 = 2,928,018 : x
  2. Step 2: Convert to fraction form
    7,976,663.76/11,966,572.92 = 2,928,018/x
  3. Step 3: Cross multiply
    7,976,663.76x = 11,966,572.92 × 2,928,018
  4. Step 4: Simplify right side
    7,976,663.76x = 35,038,340,908,072.56
  5. Step 5: Solve for x
    x = 35,038,340,908,072.56/7,976,663.76
  6. Step 6: Final answer
    x = 4,392,605.98

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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.