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Finding the Fourth Proportional to 978,444.30, 1,467,666.45 and 447,003.30

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Solution

The fourth proportional to 978,444.30, 1,467,666.45 and 447,003.30 is: 670,504.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,444.30 : 1,467,666.45 = 447,003.30 : x
  2. Step 2: Convert to fraction form
    978,444.30/1,467,666.45 = 447,003.30/x
  3. Step 3: Cross multiply
    978,444.30x = 1,467,666.45 × 447,003.30
  4. Step 4: Simplify right side
    978,444.30x = 656,051,746,449.29
  5. Step 5: Solve for x
    x = 656,051,746,449.29/978,444.30
  6. Step 6: Final answer
    x = 670,504.95

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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.