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Finding the Fourth Proportional to 3,163,802.49, 4,746,491.06 and 919,940.49

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Solution

The fourth proportional to 3,163,802.49, 4,746,491.06 and 919,940.49 is: 1,380,139.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,163,802.49 : 4,746,491.06 = 919,940.49 : x
  2. Step 2: Convert to fraction form
    3,163,802.49/4,746,491.06 = 919,940.49/x
  3. Step 3: Cross multiply
    3,163,802.49x = 4,746,491.06 × 919,940.49
  4. Step 4: Simplify right side
    3,163,802.49x = 4,366,489,306,917.32
  5. Step 5: Solve for x
    x = 4,366,489,306,917.32/3,163,802.49
  6. Step 6: Final answer
    x = 1,380,139.66

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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.