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Finding the Fourth Proportional to 1,298,991.60, 1,945,722.60 and 1,077,807.60

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Solution

The fourth proportional to 1,298,991.60, 1,945,722.60 and 1,077,807.60 is: 1,614,417.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,991.60 : 1,945,722.60 = 1,077,807.60 : x
  2. Step 2: Convert to fraction form
    1,298,991.60/1,945,722.60 = 1,077,807.60/x
  3. Step 3: Cross multiply
    1,298,991.60x = 1,945,722.60 × 1,077,807.60
  4. Step 4: Simplify right side
    1,298,991.60x = 2,097,114,605,771.76
  5. Step 5: Solve for x
    x = 2,097,114,605,771.76/1,298,991.60
  6. Step 6: Final answer
    x = 1,614,417.37

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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.