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Finding the Fourth Proportional to 1,387,534,081.31, 1,914,620,509.68 and 792,857,113.55

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Solution

The fourth proportional to 1,387,534,081.31, 1,914,620,509.68 and 792,857,113.55 is: 1,094,041,949.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,534,081.31 : 1,914,620,509.68 = 792,857,113.55 : x
  2. Step 2: Convert to fraction form
    1,387,534,081.31/1,914,620,509.68 = 792,857,113.55/x
  3. Step 3: Cross multiply
    1,387,534,081.31x = 1,914,620,509.68 × 792,857,113.55
  4. Step 4: Simplify right side
    1,387,534,081.31x = 1,518,020,490,848,514,560
  5. Step 5: Solve for x
    x = 1,518,020,490,848,514,560/1,387,534,081.31
  6. Step 6: Final answer
    x = 1,094,041,949.16

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