Home / 448,467.80-621,557.06-440,069.72

Finding the Fourth Proportional to 448,467.80, 621,557.06 and 440,069.72

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Solution

The fourth proportional to 448,467.80, 621,557.06 and 440,069.72 is: 609,917.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,467.80 : 621,557.06 = 440,069.72 : x
  2. Step 2: Convert to fraction form
    448,467.80/621,557.06 = 440,069.72/x
  3. Step 3: Cross multiply
    448,467.80x = 621,557.06 × 440,069.72
  4. Step 4: Simplify right side
    448,467.80x = 273,528,436,050.09
  5. Step 5: Solve for x
    x = 273,528,436,050.09/448,467.80
  6. Step 6: Final answer
    x = 609,917.68

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.