Home / 688,410,939.72-1,032,312,602.48-197,012,324.28

Finding the Fourth Proportional to 688,410,939.72, 1,032,312,602.48 and 197,012,324.28

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Solution

The fourth proportional to 688,410,939.72, 1,032,312,602.48 and 197,012,324.28 is: 295,431,541.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,410,939.72 : 1,032,312,602.48 = 197,012,324.28 : x
  2. Step 2: Convert to fraction form
    688,410,939.72/1,032,312,602.48 = 197,012,324.28/x
  3. Step 3: Cross multiply
    688,410,939.72x = 1,032,312,602.48 × 197,012,324.28
  4. Step 4: Simplify right side
    688,410,939.72x = 203,378,305,198,120,512
  5. Step 5: Solve for x
    x = 203,378,305,198,120,512/688,410,939.72
  6. Step 6: Final answer
    x = 295,431,541.63

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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.