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Finding the Fourth Proportional to 1,985,555.88, 2,978,295.42 and 565,621.16

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Solution

The fourth proportional to 1,985,555.88, 2,978,295.42 and 565,621.16 is: 848,420.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985,555.88 : 2,978,295.42 = 565,621.16 : x
  2. Step 2: Convert to fraction form
    1,985,555.88/2,978,295.42 = 565,621.16/x
  3. Step 3: Cross multiply
    1,985,555.88x = 2,978,295.42 × 565,621.16
  4. Step 4: Simplify right side
    1,985,555.88x = 1,684,586,910,283.09
  5. Step 5: Solve for x
    x = 1,684,586,910,283.09/1,985,555.88
  6. Step 6: Final answer
    x = 848,420.80

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.