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Finding the Fourth Proportional to 1,329,308.74, 1,834,436.73 and 725,696.74

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Solution

The fourth proportional to 1,329,308.74, 1,834,436.73 and 725,696.74 is: 1,001,456.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,308.74 : 1,834,436.73 = 725,696.74 : x
  2. Step 2: Convert to fraction form
    1,329,308.74/1,834,436.73 = 725,696.74/x
  3. Step 3: Cross multiply
    1,329,308.74x = 1,834,436.73 × 725,696.74
  4. Step 4: Simplify right side
    1,329,308.74x = 1,331,244,754,697.26
  5. Step 5: Solve for x
    x = 1,331,244,754,697.26/1,329,308.74
  6. Step 6: Final answer
    x = 1,001,456.41

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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.