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Finding the Fourth Proportional to 978,590.68, 1,467,620.28 and 268,450.72

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Solution

The fourth proportional to 978,590.68, 1,467,620.28 and 268,450.72 is: 402,603.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,590.68 : 1,467,620.28 = 268,450.72 : x
  2. Step 2: Convert to fraction form
    978,590.68/1,467,620.28 = 268,450.72/x
  3. Step 3: Cross multiply
    978,590.68x = 1,467,620.28 × 268,450.72
  4. Step 4: Simplify right side
    978,590.68x = 393,983,720,852.60
  5. Step 5: Solve for x
    x = 393,983,720,852.60/978,590.68
  6. Step 6: Final answer
    x = 402,603.18

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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.