Home / 865,769,107.97-1,298,635,467.47-210,723,788.72

Finding the Fourth Proportional to 865,769,107.97, 1,298,635,467.47 and 210,723,788.72

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Solution

The fourth proportional to 865,769,107.97, 1,298,635,467.47 and 210,723,788.72 is: 316,081,254.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,769,107.97 : 1,298,635,467.47 = 210,723,788.72 : x
  2. Step 2: Convert to fraction form
    865,769,107.97/1,298,635,467.47 = 210,723,788.72/x
  3. Step 3: Cross multiply
    865,769,107.97x = 1,298,635,467.47 × 210,723,788.72
  4. Step 4: Simplify right side
    865,769,107.97x = 273,653,385,871,446,720
  5. Step 5: Solve for x
    x = 273,653,385,871,446,720/865,769,107.97
  6. Step 6: Final answer
    x = 316,081,254.64

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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.