Home / 645,500.96-890,728.92-373,514.60

Finding the Fourth Proportional to 645,500.96, 890,728.92 and 373,514.60

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Solution

The fourth proportional to 645,500.96, 890,728.92 and 373,514.60 is: 515,414.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,500.96 : 890,728.92 = 373,514.60 : x
  2. Step 2: Convert to fraction form
    645,500.96/890,728.92 = 373,514.60/x
  3. Step 3: Cross multiply
    645,500.96x = 890,728.92 × 373,514.60
  4. Step 4: Simplify right side
    645,500.96x = 332,700,256,262.23
  5. Step 5: Solve for x
    x = 332,700,256,262.23/645,500.96
  6. Step 6: Final answer
    x = 515,414.04

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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.