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Finding the Fourth Proportional to 978,366.80, 1,467,550.20 and 446,925.80

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Solution

The fourth proportional to 978,366.80, 1,467,550.20 and 446,925.80 is: 670,388.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,366.80 : 1,467,550.20 = 446,925.80 : x
  2. Step 2: Convert to fraction form
    978,366.80/1,467,550.20 = 446,925.80/x
  3. Step 3: Cross multiply
    978,366.80x = 1,467,550.20 × 446,925.80
  4. Step 4: Simplify right side
    978,366.80x = 655,886,047,175.16
  5. Step 5: Solve for x
    x = 655,886,047,175.16/978,366.80
  6. Step 6: Final answer
    x = 670,388.70

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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.