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Finding the Fourth Proportional to 978,475.10, 1,466,296.14 and 674,557.28

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Solution

The fourth proportional to 978,475.10, 1,466,296.14 and 674,557.28 is: 1,010,859.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,475.10 : 1,466,296.14 = 674,557.28 : x
  2. Step 2: Convert to fraction form
    978,475.10/1,466,296.14 = 674,557.28/x
  3. Step 3: Cross multiply
    978,475.10x = 1,466,296.14 × 674,557.28
  4. Step 4: Simplify right side
    978,475.10x = 989,100,728,541.42
  5. Step 5: Solve for x
    x = 989,100,728,541.42/978,475.10
  6. Step 6: Final answer
    x = 1,010,859.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.