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Finding the Fourth Proportional to 1,968,218.40, 2,952,327.60 and 1,259,047.20

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Solution

The fourth proportional to 1,968,218.40, 2,952,327.60 and 1,259,047.20 is: 1,888,570.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968,218.40 : 2,952,327.60 = 1,259,047.20 : x
  2. Step 2: Convert to fraction form
    1,968,218.40/2,952,327.60 = 1,259,047.20/x
  3. Step 3: Cross multiply
    1,968,218.40x = 2,952,327.60 × 1,259,047.20
  4. Step 4: Simplify right side
    1,968,218.40x = 3,717,119,798,262.72
  5. Step 5: Solve for x
    x = 3,717,119,798,262.72/1,968,218.40
  6. Step 6: Final answer
    x = 1,888,570.80

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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.