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Finding the Fourth Proportional to 1,216,353.80, 1,821,906.30 and 1,006,401.80

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Solution

The fourth proportional to 1,216,353.80, 1,821,906.30 and 1,006,401.80 is: 1,507,431.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,353.80 : 1,821,906.30 = 1,006,401.80 : x
  2. Step 2: Convert to fraction form
    1,216,353.80/1,821,906.30 = 1,006,401.80/x
  3. Step 3: Cross multiply
    1,216,353.80x = 1,821,906.30 × 1,006,401.80
  4. Step 4: Simplify right side
    1,216,353.80x = 1,833,569,779,751.34
  5. Step 5: Solve for x
    x = 1,833,569,779,751.34/1,216,353.80
  6. Step 6: Final answer
    x = 1,507,431.29

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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.