Home / 821,443,514.63-1,232,154,509.21-199,656,940.31

Finding the Fourth Proportional to 821,443,514.63, 1,232,154,509.21 and 199,656,940.31

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Solution

The fourth proportional to 821,443,514.63, 1,232,154,509.21 and 199,656,940.31 is: 299,482,794.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,443,514.63 : 1,232,154,509.21 = 199,656,940.31 : x
  2. Step 2: Convert to fraction form
    821,443,514.63/1,232,154,509.21 = 199,656,940.31/x
  3. Step 3: Cross multiply
    821,443,514.63x = 1,232,154,509.21 × 199,656,940.31
  4. Step 4: Simplify right side
    821,443,514.63x = 246,008,199,292,376,704
  5. Step 5: Solve for x
    x = 246,008,199,292,376,704/821,443,514.63
  6. Step 6: Final answer
    x = 299,482,794.51

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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.