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Finding the Fourth Proportional to 707,918.13, 976,943.30 and 401,945.90

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Solution

The fourth proportional to 707,918.13, 976,943.30 and 401,945.90 is: 554,694.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,918.13 : 976,943.30 = 401,945.90 : x
  2. Step 2: Convert to fraction form
    707,918.13/976,943.30 = 401,945.90/x
  3. Step 3: Cross multiply
    707,918.13x = 976,943.30 × 401,945.90
  4. Step 4: Simplify right side
    707,918.13x = 392,678,347,073.02
  5. Step 5: Solve for x
    x = 392,678,347,073.02/707,918.13
  6. Step 6: Final answer
    x = 554,694.58

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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.