Home / 455,828.80-683,743.20-306,140.80

Finding the Fourth Proportional to 455,828.80, 683,743.20 and 306,140.80

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Solution

The fourth proportional to 455,828.80, 683,743.20 and 306,140.80 is: 459,211.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,828.80 : 683,743.20 = 306,140.80 : x
  2. Step 2: Convert to fraction form
    455,828.80/683,743.20 = 306,140.80/x
  3. Step 3: Cross multiply
    455,828.80x = 683,743.20 × 306,140.80
  4. Step 4: Simplify right side
    455,828.80x = 209,321,690,242.56
  5. Step 5: Solve for x
    x = 209,321,690,242.56/455,828.80
  6. Step 6: Final answer
    x = 459,211.20

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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.