Home / 920,257.80-1,380,460.50-321,205.69

Finding the Fourth Proportional to 920,257.80, 1,380,460.50 and 321,205.69

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Solution

The fourth proportional to 920,257.80, 1,380,460.50 and 321,205.69 is: 481,834.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,257.80 : 1,380,460.50 = 321,205.69 : x
  2. Step 2: Convert to fraction form
    920,257.80/1,380,460.50 = 321,205.69/x
  3. Step 3: Cross multiply
    920,257.80x = 1,380,460.50 × 321,205.69
  4. Step 4: Simplify right side
    920,257.80x = 443,411,767,420.25
  5. Step 5: Solve for x
    x = 443,411,767,420.25/920,257.80
  6. Step 6: Final answer
    x = 481,834.29

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Double scale
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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.