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Finding the Fourth Proportional to 635,067.51, 877,120.50 and 418,245.40

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Solution

The fourth proportional to 635,067.51, 877,120.50 and 418,245.40 is: 577,657.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,067.51 : 877,120.50 = 418,245.40 : x
  2. Step 2: Convert to fraction form
    635,067.51/877,120.50 = 418,245.40/x
  3. Step 3: Cross multiply
    635,067.51x = 877,120.50 × 418,245.40
  4. Step 4: Simplify right side
    635,067.51x = 366,851,615,467.10
  5. Step 5: Solve for x
    x = 366,851,615,467.10/635,067.51
  6. Step 6: Final answer
    x = 577,657.67

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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.