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Finding the Fourth Proportional to 1,293,159.92, 1,784,616 and 720,200

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Solution

The fourth proportional to 1,293,159.92, 1,784,616 and 720,200 is: 993,906.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,159.92 : 1,784,616 = 720,200 : x
  2. Step 2: Convert to fraction form
    1,293,159.92/1,784,616 = 720,200/x
  3. Step 3: Cross multiply
    1,293,159.92x = 1,784,616 × 720,200
  4. Step 4: Simplify right side
    1,293,159.92x = 1,285,280,443,200
  5. Step 5: Solve for x
    x = 1,285,280,443,200/1,293,159.92
  6. Step 6: Final answer
    x = 993,906.80

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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.