Home / 455,541.40-683,312.10-449,320.60

Finding the Fourth Proportional to 455,541.40, 683,312.10 and 449,320.60

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Solution

The fourth proportional to 455,541.40, 683,312.10 and 449,320.60 is: 673,980.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,541.40 : 683,312.10 = 449,320.60 : x
  2. Step 2: Convert to fraction form
    455,541.40/683,312.10 = 449,320.60/x
  3. Step 3: Cross multiply
    455,541.40x = 683,312.10 × 449,320.60
  4. Step 4: Simplify right side
    455,541.40x = 307,026,202,759.26
  5. Step 5: Solve for x
    x = 307,026,202,759.26/455,541.40
  6. Step 6: Final answer
    x = 673,980.90

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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.