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Finding the Fourth Proportional to 455,547.90, 683,321.85 and 449,327.10

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Solution

The fourth proportional to 455,547.90, 683,321.85 and 449,327.10 is: 673,990.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,547.90 : 683,321.85 = 449,327.10 : x
  2. Step 2: Convert to fraction form
    455,547.90/683,321.85 = 449,327.10/x
  3. Step 3: Cross multiply
    455,547.90x = 683,321.85 × 449,327.10
  4. Step 4: Simplify right side
    455,547.90x = 307,035,025,227.14
  5. Step 5: Solve for x
    x = 307,035,025,227.14/455,547.90
  6. Step 6: Final answer
    x = 673,990.65

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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.