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Finding the Fourth Proportional to 1,999,499.60, 2,996,916.60 and 800,829.20

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Solution

The fourth proportional to 1,999,499.60, 2,996,916.60 and 800,829.20 is: 1,200,309.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999,499.60 : 2,996,916.60 = 800,829.20 : x
  2. Step 2: Convert to fraction form
    1,999,499.60/2,996,916.60 = 800,829.20/x
  3. Step 3: Cross multiply
    1,999,499.60x = 2,996,916.60 × 800,829.20
  4. Step 4: Simplify right side
    1,999,499.60x = 2,400,018,323,244.72
  5. Step 5: Solve for x
    x = 2,400,018,323,244.72/1,999,499.60
  6. Step 6: Final answer
    x = 1,200,309.48

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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.