Home / 722,626.20-1,082,772.90-455,909.40

Finding the Fourth Proportional to 722,626.20, 1,082,772.90 and 455,909.40

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Solution

The fourth proportional to 722,626.20, 1,082,772.90 and 455,909.40 is: 683,128.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,626.20 : 1,082,772.90 = 455,909.40 : x
  2. Step 2: Convert to fraction form
    722,626.20/1,082,772.90 = 455,909.40/x
  3. Step 3: Cross multiply
    722,626.20x = 1,082,772.90 × 455,909.40
  4. Step 4: Simplify right side
    722,626.20x = 493,646,343,175.26
  5. Step 5: Solve for x
    x = 493,646,343,175.26/722,626.20
  6. Step 6: Final answer
    x = 683,128.21

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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.