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Finding the Fourth Proportional to 7,718,507.68, 11,578,829.48 and 2,602,400.83

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Solution

The fourth proportional to 7,718,507.68, 11,578,829.48 and 2,602,400.83 is: 3,903,961.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718,507.68 : 11,578,829.48 = 2,602,400.83 : x
  2. Step 2: Convert to fraction form
    7,718,507.68/11,578,829.48 = 2,602,400.83/x
  3. Step 3: Cross multiply
    7,718,507.68x = 11,578,829.48 × 2,602,400.83
  4. Step 4: Simplify right side
    7,718,507.68x = 30,132,755,446,802.92
  5. Step 5: Solve for x
    x = 30,132,755,446,802.92/7,718,507.68
  6. Step 6: Final answer
    x = 3,903,961.32

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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.