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Finding the Fourth Proportional to 7,892,660, 10,891,880.52 and 4,270,988

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Solution

The fourth proportional to 7,892,660, 10,891,880.52 and 4,270,988 is: 5,893,968.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,892,660 : 10,891,880.52 = 4,270,988 : x
  2. Step 2: Convert to fraction form
    7,892,660/10,891,880.52 = 4,270,988/x
  3. Step 3: Cross multiply
    7,892,660x = 10,891,880.52 × 4,270,988
  4. Step 4: Simplify right side
    7,892,660x = 46,519,090,998,353.76
  5. Step 5: Solve for x
    x = 46,519,090,998,353.76/7,892,660
  6. Step 6: Final answer
    x = 5,893,968.70

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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.