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Finding the Fourth Proportional to 978,443.68, 1,467,885.84 and 347,356.48

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Solution

The fourth proportional to 978,443.68, 1,467,885.84 and 347,356.48 is: 521,112.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,443.68 : 1,467,885.84 = 347,356.48 : x
  2. Step 2: Convert to fraction form
    978,443.68/1,467,885.84 = 347,356.48/x
  3. Step 3: Cross multiply
    978,443.68x = 1,467,885.84 × 347,356.48
  4. Step 4: Simplify right side
    978,443.68x = 509,879,658,424.24
  5. Step 5: Solve for x
    x = 509,879,658,424.24/978,443.68
  6. Step 6: Final answer
    x = 521,112.94

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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.