Home / 455,439.40-683,159.10-449,218.60

Finding the Fourth Proportional to 455,439.40, 683,159.10 and 449,218.60

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Solution

The fourth proportional to 455,439.40, 683,159.10 and 449,218.60 is: 673,827.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,439.40 : 683,159.10 = 449,218.60 : x
  2. Step 2: Convert to fraction form
    455,439.40/683,159.10 = 449,218.60/x
  3. Step 3: Cross multiply
    455,439.40x = 683,159.10 × 449,218.60
  4. Step 4: Simplify right side
    455,439.40x = 306,887,774,479.26
  5. Step 5: Solve for x
    x = 306,887,774,479.26/455,439.40
  6. Step 6: Final answer
    x = 673,827.90

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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.