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Finding the Fourth Proportional to 518,313.18, 777,469.77 and 511,670.17

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Solution

The fourth proportional to 518,313.18, 777,469.77 and 511,670.17 is: 767,505.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,313.18 : 777,469.77 = 511,670.17 : x
  2. Step 2: Convert to fraction form
    518,313.18/777,469.77 = 511,670.17/x
  3. Step 3: Cross multiply
    518,313.18x = 777,469.77 × 511,670.17
  4. Step 4: Simplify right side
    518,313.18x = 397,808,082,940.06
  5. Step 5: Solve for x
    x = 397,808,082,940.06/518,313.18
  6. Step 6: Final answer
    x = 767,505.25

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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.