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Finding the Fourth Proportional to 485,828.02, 669,933.90 and 418,074.76

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Solution

The fourth proportional to 485,828.02, 669,933.90 and 418,074.76 is: 576,505.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,828.02 : 669,933.90 = 418,074.76 : x
  2. Step 2: Convert to fraction form
    485,828.02/669,933.90 = 418,074.76/x
  3. Step 3: Cross multiply
    485,828.02x = 669,933.90 × 418,074.76
  4. Step 4: Simplify right side
    485,828.02x = 280,082,454,458.36
  5. Step 5: Solve for x
    x = 280,082,454,458.36/485,828.02
  6. Step 6: Final answer
    x = 576,505.35

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.