Home / 455,826.42-683,740.12-118,866.78

Finding the Fourth Proportional to 455,826.42, 683,740.12 and 118,866.78

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Solution

The fourth proportional to 455,826.42, 683,740.12 and 118,866.78 is: 178,300.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,826.42 : 683,740.12 = 118,866.78 : x
  2. Step 2: Convert to fraction form
    455,826.42/683,740.12 = 118,866.78/x
  3. Step 3: Cross multiply
    455,826.42x = 683,740.12 × 118,866.78
  4. Step 4: Simplify right side
    455,826.42x = 81,273,986,421.21
  5. Step 5: Solve for x
    x = 81,273,986,421.21/455,826.42
  6. Step 6: Final answer
    x = 178,300.30

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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.