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Finding the Fourth Proportional to 448,051.80, 673,389.90 and 440,178.60

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Solution

The fourth proportional to 448,051.80, 673,389.90 and 440,178.60 is: 661,557.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,051.80 : 673,389.90 = 440,178.60 : x
  2. Step 2: Convert to fraction form
    448,051.80/673,389.90 = 440,178.60/x
  3. Step 3: Cross multiply
    448,051.80x = 673,389.90 × 440,178.60
  4. Step 4: Simplify right side
    448,051.80x = 296,411,823,436.14
  5. Step 5: Solve for x
    x = 296,411,823,436.14/448,051.80
  6. Step 6: Final answer
    x = 661,557.04

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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.