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Finding the Fourth Proportional to 618,925,668.80, 928,191,537.72 and 204,325,294.13

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Solution

The fourth proportional to 618,925,668.80, 928,191,537.72 and 204,325,294.13 is: 306,422,917.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,925,668.80 : 928,191,537.72 = 204,325,294.13 : x
  2. Step 2: Convert to fraction form
    618,925,668.80/928,191,537.72 = 204,325,294.13/x
  3. Step 3: Cross multiply
    618,925,668.80x = 928,191,537.72 × 204,325,294.13
  4. Step 4: Simplify right side
    618,925,668.80x = 189,653,008,948,975,040
  5. Step 5: Solve for x
    x = 189,653,008,948,975,040/618,925,668.80
  6. Step 6: Final answer
    x = 306,422,917.18

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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.