Home / 428,574,139.32-591,558,181.44-279,917,986.44

Finding the Fourth Proportional to 428,574,139.32, 591,558,181.44 and 279,917,986.44

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Solution

The fourth proportional to 428,574,139.32, 591,558,181.44 and 279,917,986.44 is: 386,369,031.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,574,139.32 : 591,558,181.44 = 279,917,986.44 : x
  2. Step 2: Convert to fraction form
    428,574,139.32/591,558,181.44 = 279,917,986.44/x
  3. Step 3: Cross multiply
    428,574,139.32x = 591,558,181.44 × 279,917,986.44
  4. Step 4: Simplify right side
    428,574,139.32x = 165,587,775,010,792,992
  5. Step 5: Solve for x
    x = 165,587,775,010,792,992/428,574,139.32
  6. Step 6: Final answer
    x = 386,369,031.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.