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Finding the Fourth Proportional to 455,520.70, 683,281.05 and 448,522.30

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Solution

The fourth proportional to 455,520.70, 683,281.05 and 448,522.30 is: 672,783.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,520.70 : 683,281.05 = 448,522.30 : x
  2. Step 2: Convert to fraction form
    455,520.70/683,281.05 = 448,522.30/x
  3. Step 3: Cross multiply
    455,520.70x = 683,281.05 × 448,522.30
  4. Step 4: Simplify right side
    455,520.70x = 306,466,788,092.42
  5. Step 5: Solve for x
    x = 306,466,788,092.42/455,520.70
  6. Step 6: Final answer
    x = 672,783.45

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Similar ratio
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1.5x scale

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.