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Finding the Fourth Proportional to 556,811.01, 768,399.19 and 302,162.20

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Solution

The fourth proportional to 556,811.01, 768,399.19 and 302,162.20 is: 416,983.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,811.01 : 768,399.19 = 302,162.20 : x
  2. Step 2: Convert to fraction form
    556,811.01/768,399.19 = 302,162.20/x
  3. Step 3: Cross multiply
    556,811.01x = 768,399.19 × 302,162.20
  4. Step 4: Simplify right side
    556,811.01x = 232,181,189,728.62
  5. Step 5: Solve for x
    x = 232,181,189,728.62/556,811.01
  6. Step 6: Final answer
    x = 416,983.83

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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.