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Finding the Fourth Proportional to 1,200,362.90, 1,797,978.06 and 971,670.74

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Solution

The fourth proportional to 1,200,362.90, 1,797,978.06 and 971,670.74 is: 1,455,428.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,362.90 : 1,797,978.06 = 971,670.74 : x
  2. Step 2: Convert to fraction form
    1,200,362.90/1,797,978.06 = 971,670.74/x
  3. Step 3: Cross multiply
    1,200,362.90x = 1,797,978.06 × 971,670.74
  4. Step 4: Simplify right side
    1,200,362.90x = 1,747,042,663,074.07
  5. Step 5: Solve for x
    x = 1,747,042,663,074.07/1,200,362.90
  6. Step 6: Final answer
    x = 1,455,428.75

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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.