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Finding the Fourth Proportional to 720,477.36, 994,297.21 and 414,600.30

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Solution

The fourth proportional to 720,477.36, 994,297.21 and 414,600.30 is: 572,170.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,477.36 : 994,297.21 = 414,600.30 : x
  2. Step 2: Convert to fraction form
    720,477.36/994,297.21 = 414,600.30/x
  3. Step 3: Cross multiply
    720,477.36x = 994,297.21 × 414,600.30
  4. Step 4: Simplify right side
    720,477.36x = 412,235,920,518.66
  5. Step 5: Solve for x
    x = 412,235,920,518.66/720,477.36
  6. Step 6: Final answer
    x = 572,170.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.