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Finding the Fourth Proportional to 978,475.95, 1,467,647.91 and 268,444.53

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Solution

The fourth proportional to 978,475.95, 1,467,647.91 and 268,444.53 is: 402,648.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,475.95 : 1,467,647.91 = 268,444.53 : x
  2. Step 2: Convert to fraction form
    978,475.95/1,467,647.91 = 268,444.53/x
  3. Step 3: Cross multiply
    978,475.95x = 1,467,647.91 × 268,444.53
  4. Step 4: Simplify right side
    978,475.95x = 393,982,053,405.43
  5. Step 5: Solve for x
    x = 393,982,053,405.43/978,475.95
  6. Step 6: Final answer
    x = 402,648.68

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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.