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Finding the Fourth Proportional to 1,868,961.60, 2,802,405.60 and 803,822.40

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Solution

The fourth proportional to 1,868,961.60, 2,802,405.60 and 803,822.40 is: 1,205,287.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868,961.60 : 2,802,405.60 = 803,822.40 : x
  2. Step 2: Convert to fraction form
    1,868,961.60/2,802,405.60 = 803,822.40/x
  3. Step 3: Cross multiply
    1,868,961.60x = 2,802,405.60 × 803,822.40
  4. Step 4: Simplify right side
    1,868,961.60x = 2,252,636,395,165.44
  5. Step 5: Solve for x
    x = 2,252,636,395,165.44/1,868,961.60
  6. Step 6: Final answer
    x = 1,205,287.68

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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.