Home / 1,118,812.20-1,678,383.69-408,674.16

Finding the Fourth Proportional to 1,118,812.20, 1,678,383.69 and 408,674.16

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Solution

The fourth proportional to 1,118,812.20, 1,678,383.69 and 408,674.16 is: 613,071.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,812.20 : 1,678,383.69 = 408,674.16 : x
  2. Step 2: Convert to fraction form
    1,118,812.20/1,678,383.69 = 408,674.16/x
  3. Step 3: Cross multiply
    1,118,812.20x = 1,678,383.69 × 408,674.16
  4. Step 4: Simplify right side
    1,118,812.20x = 685,912,043,135.92
  5. Step 5: Solve for x
    x = 685,912,043,135.92/1,118,812.20
  6. Step 6: Final answer
    x = 613,071.65

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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.