Home / 1,208,100,164.81-1,667,123,122.86-672,278,319.50

Finding the Fourth Proportional to 1,208,100,164.81, 1,667,123,122.86 and 672,278,319.50

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Solution

The fourth proportional to 1,208,100,164.81, 1,667,123,122.86 and 672,278,319.50 is: 927,713,416.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,100,164.81 : 1,667,123,122.86 = 672,278,319.50 : x
  2. Step 2: Convert to fraction form
    1,208,100,164.81/1,667,123,122.86 = 672,278,319.50/x
  3. Step 3: Cross multiply
    1,208,100,164.81x = 1,667,123,122.86 × 672,278,319.50
  4. Step 4: Simplify right side
    1,208,100,164.81x = 1,120,770,731,427,577,216
  5. Step 5: Solve for x
    x = 1,120,770,731,427,577,216/1,208,100,164.81
  6. Step 6: Final answer
    x = 927,713,416.55

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Double scale
Find fourth proportional to 1,208,100,165.81, 1,667,123,124.24 and 672,278,320.50
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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.