Home / 890,390.52-1,335,596.04-321,814.80

Finding the Fourth Proportional to 890,390.52, 1,335,596.04 and 321,814.80

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Solution

The fourth proportional to 890,390.52, 1,335,596.04 and 321,814.80 is: 482,725.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,390.52 : 1,335,596.04 = 321,814.80 : x
  2. Step 2: Convert to fraction form
    890,390.52/1,335,596.04 = 321,814.80/x
  3. Step 3: Cross multiply
    890,390.52x = 1,335,596.04 × 321,814.80
  4. Step 4: Simplify right side
    890,390.52x = 429,814,572,493.39
  5. Step 5: Solve for x
    x = 429,814,572,493.39/890,390.52
  6. Step 6: Final answer
    x = 482,725.91

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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.