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Finding the Fourth Proportional to 701,291.51, 967,782.48 and 399,485.51

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Solution

The fourth proportional to 701,291.51, 967,782.48 and 399,485.51 is: 551,290.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    701,291.51 : 967,782.48 = 399,485.51 : x
  2. Step 2: Convert to fraction form
    701,291.51/967,782.48 = 399,485.51/x
  3. Step 3: Cross multiply
    701,291.51x = 967,782.48 × 399,485.51
  4. Step 4: Simplify right side
    701,291.51x = 386,615,072,752.95
  5. Step 5: Solve for x
    x = 386,615,072,752.95/701,291.51
  6. Step 6: Final answer
    x = 551,290.11

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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.