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Finding the Fourth Proportional to 978,471.78, 1,466,034.51 and 765,157.32

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Solution

The fourth proportional to 978,471.78, 1,466,034.51 and 765,157.32 is: 1,146,427.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,471.78 : 1,466,034.51 = 765,157.32 : x
  2. Step 2: Convert to fraction form
    978,471.78/1,466,034.51 = 765,157.32/x
  3. Step 3: Cross multiply
    978,471.78x = 1,466,034.51 × 765,157.32
  4. Step 4: Simplify right side
    978,471.78x = 1,121,747,036,699.11
  5. Step 5: Solve for x
    x = 1,121,747,036,699.11/978,471.78
  6. Step 6: Final answer
    x = 1,146,427.58

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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.