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Finding the Fourth Proportional to 978,561.72, 1,466,168.76 and 765,248.04

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Solution

The fourth proportional to 978,561.72, 1,466,168.76 and 765,248.04 is: 1,146,563.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,561.72 : 1,466,168.76 = 765,248.04 : x
  2. Step 2: Convert to fraction form
    978,561.72/1,466,168.76 = 765,248.04/x
  3. Step 3: Cross multiply
    978,561.72x = 1,466,168.76 × 765,248.04
  4. Step 4: Simplify right side
    978,561.72x = 1,121,982,769,899.23
  5. Step 5: Solve for x
    x = 1,121,982,769,899.23/978,561.72
  6. Step 6: Final answer
    x = 1,146,563.11

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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.