Home / 645,104.25-890,353.88-373,337.61

Finding the Fourth Proportional to 645,104.25, 890,353.88 and 373,337.61

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Solution

The fourth proportional to 645,104.25, 890,353.88 and 373,337.61 is: 515,269.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,104.25 : 890,353.88 = 373,337.61 : x
  2. Step 2: Convert to fraction form
    645,104.25/890,353.88 = 373,337.61/x
  3. Step 3: Cross multiply
    645,104.25x = 890,353.88 × 373,337.61
  4. Step 4: Simplify right side
    645,104.25x = 332,402,589,613.43
  5. Step 5: Solve for x
    x = 332,402,589,613.43/645,104.25
  6. Step 6: Final answer
    x = 515,269.57

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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.