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Finding the Fourth Proportional to 720,051.80, 1,079,559.30 and 404,605.40

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Solution

The fourth proportional to 720,051.80, 1,079,559.30 and 404,605.40 is: 606,616.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,051.80 : 1,079,559.30 = 404,605.40 : x
  2. Step 2: Convert to fraction form
    720,051.80/1,079,559.30 = 404,605.40/x
  3. Step 3: Cross multiply
    720,051.80x = 1,079,559.30 × 404,605.40
  4. Step 4: Simplify right side
    720,051.80x = 436,795,522,400.22
  5. Step 5: Solve for x
    x = 436,795,522,400.22/720,051.80
  6. Step 6: Final answer
    x = 606,616.81

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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.