Home / 1,187,136,009.20-1,780,704,013.80-1,055,622,076.40

Finding the Fourth Proportional to 1,187,136,009.20, 1,780,704,013.80 and 1,055,622,076.40

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Solution

The fourth proportional to 1,187,136,009.20, 1,780,704,013.80 and 1,055,622,076.40 is: 1,583,433,114.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,136,009.20 : 1,780,704,013.80 = 1,055,622,076.40 : x
  2. Step 2: Convert to fraction form
    1,187,136,009.20/1,780,704,013.80 = 1,055,622,076.40/x
  3. Step 3: Cross multiply
    1,187,136,009.20x = 1,780,704,013.80 × 1,055,622,076.40
  4. Step 4: Simplify right side
    1,187,136,009.20x = 1,879,750,468,501,370,112
  5. Step 5: Solve for x
    x = 1,879,750,468,501,370,112/1,187,136,009.20
  6. Step 6: Final answer
    x = 1,583,433,114.60

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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.