Home / 865,769,107.28-1,298,635,466.45-210,723,788.03

Finding the Fourth Proportional to 865,769,107.28, 1,298,635,466.45 and 210,723,788.03

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Solution

The fourth proportional to 865,769,107.28, 1,298,635,466.45 and 210,723,788.03 is: 316,081,253.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,769,107.28 : 1,298,635,466.45 = 210,723,788.03 : x
  2. Step 2: Convert to fraction form
    865,769,107.28/1,298,635,466.45 = 210,723,788.03/x
  3. Step 3: Cross multiply
    865,769,107.28x = 1,298,635,466.45 × 210,723,788.03
  4. Step 4: Simplify right side
    865,769,107.28x = 273,653,384,752,903,168
  5. Step 5: Solve for x
    x = 273,653,384,752,903,168/865,769,107.28
  6. Step 6: Final answer
    x = 316,081,253.60

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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.