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Finding the Fourth Proportional to 978,277.12, 1,463,736.48 and 579,105.76

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Solution

The fourth proportional to 978,277.12, 1,463,736.48 and 579,105.76 is: 866,480.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,277.12 : 1,463,736.48 = 579,105.76 : x
  2. Step 2: Convert to fraction form
    978,277.12/1,463,736.48 = 579,105.76/x
  3. Step 3: Cross multiply
    978,277.12x = 1,463,736.48 × 579,105.76
  4. Step 4: Simplify right side
    978,277.12x = 847,658,226,690.13
  5. Step 5: Solve for x
    x = 847,658,226,690.13/978,277.12
  6. Step 6: Final answer
    x = 866,480.68

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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.