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Finding the Fourth Proportional to 1,281,970.92, 1,769,664.59 and 798,774.80

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Solution

The fourth proportional to 1,281,970.92, 1,769,664.59 and 798,774.80 is: 1,102,648.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,970.92 : 1,769,664.59 = 798,774.80 : x
  2. Step 2: Convert to fraction form
    1,281,970.92/1,769,664.59 = 798,774.80/x
  3. Step 3: Cross multiply
    1,281,970.92x = 1,769,664.59 × 798,774.80
  4. Step 4: Simplify right side
    1,281,970.92x = 1,413,563,483,545.01
  5. Step 5: Solve for x
    x = 1,413,563,483,545.01/1,281,970.92
  6. Step 6: Final answer
    x = 1,102,648.64

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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.