Home / 890,515.03-1,334,979.73-321,769.28

Finding the Fourth Proportional to 890,515.03, 1,334,979.73 and 321,769.28

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Solution

The fourth proportional to 890,515.03, 1,334,979.73 and 321,769.28 is: 482,367.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,515.03 : 1,334,979.73 = 321,769.28 : x
  2. Step 2: Convert to fraction form
    890,515.03/1,334,979.73 = 321,769.28/x
  3. Step 3: Cross multiply
    890,515.03x = 1,334,979.73 × 321,769.28
  4. Step 4: Simplify right side
    890,515.03x = 429,555,466,536.69
  5. Step 5: Solve for x
    x = 429,555,466,536.69/890,515.03
  6. Step 6: Final answer
    x = 482,367.45

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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.