Home / 806,000.75-1,112,279.37-443,423.74

Finding the Fourth Proportional to 806,000.75, 1,112,279.37 and 443,423.74

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Solution

The fourth proportional to 806,000.75, 1,112,279.37 and 443,423.74 is: 611,923.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,000.75 : 1,112,279.37 = 443,423.74 : x
  2. Step 2: Convert to fraction form
    806,000.75/1,112,279.37 = 443,423.74/x
  3. Step 3: Cross multiply
    806,000.75x = 1,112,279.37 × 443,423.74
  4. Step 4: Simplify right side
    806,000.75x = 493,211,070,391.73
  5. Step 5: Solve for x
    x = 493,211,070,391.73/806,000.75
  6. Step 6: Final answer
    x = 611,923.84

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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.