Home / 806,923.40-1,210,730.70-412,939.40

Finding the Fourth Proportional to 806,923.40, 1,210,730.70 and 412,939.40

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Solution

The fourth proportional to 806,923.40, 1,210,730.70 and 412,939.40 is: 619,585.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,923.40 : 1,210,730.70 = 412,939.40 : x
  2. Step 2: Convert to fraction form
    806,923.40/1,210,730.70 = 412,939.40/x
  3. Step 3: Cross multiply
    806,923.40x = 1,210,730.70 × 412,939.40
  4. Step 4: Simplify right side
    806,923.40x = 499,958,408,819.58
  5. Step 5: Solve for x
    x = 499,958,408,819.58/806,923.40
  6. Step 6: Final answer
    x = 619,585.96

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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.