Home / 806,288.54-1,112,678.35-443,712.40

Finding the Fourth Proportional to 806,288.54, 1,112,678.35 and 443,712.40

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Solution

The fourth proportional to 806,288.54, 1,112,678.35 and 443,712.40 is: 612,323.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,288.54 : 1,112,678.35 = 443,712.40 : x
  2. Step 2: Convert to fraction form
    806,288.54/1,112,678.35 = 443,712.40/x
  3. Step 3: Cross multiply
    806,288.54x = 1,112,678.35 × 443,712.40
  4. Step 4: Simplify right side
    806,288.54x = 493,709,177,215.56
  5. Step 5: Solve for x
    x = 493,709,177,215.56/806,288.54
  6. Step 6: Final answer
    x = 612,323.20

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Double scale
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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.