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Finding the Fourth Proportional to 707,564.48, 976,389.60 and 401,647.04

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Solution

The fourth proportional to 707,564.48, 976,389.60 and 401,647.04 is: 554,244.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,564.48 : 976,389.60 = 401,647.04 : x
  2. Step 2: Convert to fraction form
    707,564.48/976,389.60 = 401,647.04/x
  3. Step 3: Cross multiply
    707,564.48x = 976,389.60 × 401,647.04
  4. Step 4: Simplify right side
    707,564.48x = 392,163,992,726.78
  5. Step 5: Solve for x
    x = 392,163,992,726.78/707,564.48
  6. Step 6: Final answer
    x = 554,244.88

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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.