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Finding the Fourth Proportional to 1,433,676.62, 1,978,473.62 and 780,307.32

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Solution

The fourth proportional to 1,433,676.62, 1,978,473.62 and 780,307.32 is: 1,076,824.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433,676.62 : 1,978,473.62 = 780,307.32 : x
  2. Step 2: Convert to fraction form
    1,433,676.62/1,978,473.62 = 780,307.32/x
  3. Step 3: Cross multiply
    1,433,676.62x = 1,978,473.62 × 780,307.32
  4. Step 4: Simplify right side
    1,433,676.62x = 1,543,817,448,112.90
  5. Step 5: Solve for x
    x = 1,543,817,448,112.90/1,433,676.62
  6. Step 6: Final answer
    x = 1,076,824.04

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.