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Finding the Fourth Proportional to 1,072,014.01, 1,605,918.80 and 621,789.01

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Solution

The fourth proportional to 1,072,014.01, 1,605,918.80 and 621,789.01 is: 931,464.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,072,014.01 : 1,605,918.80 = 621,789.01 : x
  2. Step 2: Convert to fraction form
    1,072,014.01/1,605,918.80 = 621,789.01/x
  3. Step 3: Cross multiply
    1,072,014.01x = 1,605,918.80 × 621,789.01
  4. Step 4: Simplify right side
    1,072,014.01x = 998,542,657,683.44
  5. Step 5: Solve for x
    x = 998,542,657,683.44/1,072,014.01
  6. Step 6: Final answer
    x = 931,464.19

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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.