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Finding the Fourth Proportional to 661,668.10, 993,020.55 and 306,726.10

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Solution

The fourth proportional to 661,668.10, 993,020.55 and 306,726.10 is: 460,329.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,668.10 : 993,020.55 = 306,726.10 : x
  2. Step 2: Convert to fraction form
    661,668.10/993,020.55 = 306,726.10/x
  3. Step 3: Cross multiply
    661,668.10x = 993,020.55 × 306,726.10
  4. Step 4: Simplify right side
    661,668.10x = 304,585,320,521.36
  5. Step 5: Solve for x
    x = 304,585,320,521.36/661,668.10
  6. Step 6: Final answer
    x = 460,329.46

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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.