Home / 715,527,796.08-987,422,418.36-402,263,403.24

Finding the Fourth Proportional to 715,527,796.08, 987,422,418.36 and 402,263,403.24

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Solution

The fourth proportional to 715,527,796.08, 987,422,418.36 and 402,263,403.24 is: 555,120,156.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,527,796.08 : 987,422,418.36 = 402,263,403.24 : x
  2. Step 2: Convert to fraction form
    715,527,796.08/987,422,418.36 = 402,263,403.24/x
  3. Step 3: Cross multiply
    715,527,796.08x = 987,422,418.36 × 402,263,403.24
  4. Step 4: Simplify right side
    715,527,796.08x = 397,203,902,444,964,672
  5. Step 5: Solve for x
    x = 397,203,902,444,964,672/715,527,796.08
  6. Step 6: Final answer
    x = 555,120,156.93

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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.