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Finding the Fourth Proportional to 978,507.72, 1,466,345.02 and 674,589.92

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Solution

The fourth proportional to 978,507.72, 1,466,345.02 and 674,589.92 is: 1,010,908.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,507.72 : 1,466,345.02 = 674,589.92 : x
  2. Step 2: Convert to fraction form
    978,507.72/1,466,345.02 = 674,589.92/x
  3. Step 3: Cross multiply
    978,507.72x = 1,466,345.02 × 674,589.92
  4. Step 4: Simplify right side
    978,507.72x = 989,181,569,734.20
  5. Step 5: Solve for x
    x = 989,181,569,734.20/978,507.72
  6. Step 6: Final answer
    x = 1,010,908.29

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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.