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Finding the Fourth Proportional to 772,311.98, 1,158,416.01 and 266,879.88

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Solution

The fourth proportional to 772,311.98, 1,158,416.01 and 266,879.88 is: 400,301.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,311.98 : 1,158,416.01 = 266,879.88 : x
  2. Step 2: Convert to fraction form
    772,311.98/1,158,416.01 = 266,879.88/x
  3. Step 3: Cross multiply
    772,311.98x = 1,158,416.01 × 266,879.88
  4. Step 4: Simplify right side
    772,311.98x = 309,157,925,738.88
  5. Step 5: Solve for x
    x = 309,157,925,738.88/772,311.98
  6. Step 6: Final answer
    x = 400,301.86

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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.