Home / 1,159,840,010.40-1,739,760,015.60-643,861,975.20

Finding the Fourth Proportional to 1,159,840,010.40, 1,739,760,015.60 and 643,861,975.20

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Solution

The fourth proportional to 1,159,840,010.40, 1,739,760,015.60 and 643,861,975.20 is: 965,792,962.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,159,840,010.40 : 1,739,760,015.60 = 643,861,975.20 : x
  2. Step 2: Convert to fraction form
    1,159,840,010.40/1,739,760,015.60 = 643,861,975.20/x
  3. Step 3: Cross multiply
    1,159,840,010.40x = 1,739,760,015.60 × 643,861,975.20
  4. Step 4: Simplify right side
    1,159,840,010.40x = 1,120,165,320,018,198,784
  5. Step 5: Solve for x
    x = 1,120,165,320,018,198,784/1,159,840,010.40
  6. Step 6: Final answer
    x = 965,792,962.80

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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.