Home / 383,558.72-529,538.09-340,999.70

Finding the Fourth Proportional to 383,558.72, 529,538.09 and 340,999.70

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Solution

The fourth proportional to 383,558.72, 529,538.09 and 340,999.70 is: 470,781.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,558.72 : 529,538.09 = 340,999.70 : x
  2. Step 2: Convert to fraction form
    383,558.72/529,538.09 = 340,999.70/x
  3. Step 3: Cross multiply
    383,558.72x = 529,538.09 × 340,999.70
  4. Step 4: Simplify right side
    383,558.72x = 180,572,327,461.65
  5. Step 5: Solve for x
    x = 180,572,327,461.65/383,558.72
  6. Step 6: Final answer
    x = 470,781.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.