Home / 1,311,690.12-1,967,811.66-425,157

Finding the Fourth Proportional to 1,311,690.12, 1,967,811.66 and 425,157

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Solution

The fourth proportional to 1,311,690.12, 1,967,811.66 and 425,157 is: 637,825.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,690.12 : 1,967,811.66 = 425,157 : x
  2. Step 2: Convert to fraction form
    1,311,690.12/1,967,811.66 = 425,157/x
  3. Step 3: Cross multiply
    1,311,690.12x = 1,967,811.66 × 425,157
  4. Step 4: Simplify right side
    1,311,690.12x = 836,628,901,930.62
  5. Step 5: Solve for x
    x = 836,628,901,930.62/1,311,690.12
  6. Step 6: Final answer
    x = 637,825.12

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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.