Home / 455,428.80-683,143.20-306,129.60

Finding the Fourth Proportional to 455,428.80, 683,143.20 and 306,129.60

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Solution

The fourth proportional to 455,428.80, 683,143.20 and 306,129.60 is: 459,194.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,428.80 : 683,143.20 = 306,129.60 : x
  2. Step 2: Convert to fraction form
    455,428.80/683,143.20 = 306,129.60/x
  3. Step 3: Cross multiply
    455,428.80x = 683,143.20 × 306,129.60
  4. Step 4: Simplify right side
    455,428.80x = 209,130,354,558.72
  5. Step 5: Solve for x
    x = 209,130,354,558.72/455,428.80
  6. Step 6: Final answer
    x = 459,194.40

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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.