Home / 1,392,004.80-2,088,007.20-445,406.40

Finding the Fourth Proportional to 1,392,004.80, 2,088,007.20 and 445,406.40

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Solution

The fourth proportional to 1,392,004.80, 2,088,007.20 and 445,406.40 is: 668,109.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,004.80 : 2,088,007.20 = 445,406.40 : x
  2. Step 2: Convert to fraction form
    1,392,004.80/2,088,007.20 = 445,406.40/x
  3. Step 3: Cross multiply
    1,392,004.80x = 2,088,007.20 × 445,406.40
  4. Step 4: Simplify right side
    1,392,004.80x = 930,011,770,126.08
  5. Step 5: Solve for x
    x = 930,011,770,126.08/1,392,004.80
  6. Step 6: Final answer
    x = 668,109.60

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Similar ratio
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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.