Home / 743,738.20-1,115,922.98-406,384.80

Finding the Fourth Proportional to 743,738.20, 1,115,922.98 and 406,384.80

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Solution

The fourth proportional to 743,738.20, 1,115,922.98 and 406,384.80 is: 609,749.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,738.20 : 1,115,922.98 = 406,384.80 : x
  2. Step 2: Convert to fraction form
    743,738.20/1,115,922.98 = 406,384.80/x
  3. Step 3: Cross multiply
    743,738.20x = 1,115,922.98 × 406,384.80
  4. Step 4: Simplify right side
    743,738.20x = 453,494,131,588.04
  5. Step 5: Solve for x
    x = 453,494,131,588.04/743,738.20
  6. Step 6: Final answer
    x = 609,749.68

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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.