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Finding the Fourth Proportional to 455,427.40, 683,141.10 and 449,206.60

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Solution

The fourth proportional to 455,427.40, 683,141.10 and 449,206.60 is: 673,809.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,427.40 : 683,141.10 = 449,206.60 : x
  2. Step 2: Convert to fraction form
    455,427.40/683,141.10 = 449,206.60/x
  3. Step 3: Cross multiply
    455,427.40x = 683,141.10 × 449,206.60
  4. Step 4: Simplify right side
    455,427.40x = 306,871,490,851.26
  5. Step 5: Solve for x
    x = 306,871,490,851.26/455,427.40
  6. Step 6: Final answer
    x = 673,809.90

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Similar ratio
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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.