Home / 1,208,120.08-1,667,210-664,290.08

Finding the Fourth Proportional to 1,208,120.08, 1,667,210 and 664,290.08

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Solution

The fourth proportional to 1,208,120.08, 1,667,210 and 664,290.08 is: 916,722.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,120.08 : 1,667,210 = 664,290.08 : x
  2. Step 2: Convert to fraction form
    1,208,120.08/1,667,210 = 664,290.08/x
  3. Step 3: Cross multiply
    1,208,120.08x = 1,667,210 × 664,290.08
  4. Step 4: Simplify right side
    1,208,120.08x = 1,107,511,064,276.80
  5. Step 5: Solve for x
    x = 1,107,511,064,276.80/1,208,120.08
  6. Step 6: Final answer
    x = 916,722.67

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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.