Home / 806,810,013.20-1,210,215,019.80-800,763,395.60

Finding the Fourth Proportional to 806,810,013.20, 1,210,215,019.80 and 800,763,395.60

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Solution

The fourth proportional to 806,810,013.20, 1,210,215,019.80 and 800,763,395.60 is: 1,201,145,093.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,810,013.20 : 1,210,215,019.80 = 800,763,395.60 : x
  2. Step 2: Convert to fraction form
    806,810,013.20/1,210,215,019.80 = 800,763,395.60/x
  3. Step 3: Cross multiply
    806,810,013.20x = 1,210,215,019.80 × 800,763,395.60
  4. Step 4: Simplify right side
    806,810,013.20x = 969,095,888,661,169,280
  5. Step 5: Solve for x
    x = 969,095,888,661,169,280/806,810,013.20
  6. Step 6: Final answer
    x = 1,201,145,093.40

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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.