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Finding the Fourth Proportional to 1,299,822.60, 1,793,742.90 and 726,856.20

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Solution

The fourth proportional to 1,299,822.60, 1,793,742.90 and 726,856.20 is: 1,003,054.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,822.60 : 1,793,742.90 = 726,856.20 : x
  2. Step 2: Convert to fraction form
    1,299,822.60/1,793,742.90 = 726,856.20/x
  3. Step 3: Cross multiply
    1,299,822.60x = 1,793,742.90 × 726,856.20
  4. Step 4: Simplify right side
    1,299,822.60x = 1,303,793,148,070.98
  5. Step 5: Solve for x
    x = 1,303,793,148,070.98/1,299,822.60
  6. Step 6: Final answer
    x = 1,003,054.68

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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.