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Finding the Fourth Proportional to 485,473.47, 669,679.05 and 303,870.12

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Solution

The fourth proportional to 485,473.47, 669,679.05 and 303,870.12 is: 419,169.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,473.47 : 669,679.05 = 303,870.12 : x
  2. Step 2: Convert to fraction form
    485,473.47/669,679.05 = 303,870.12/x
  3. Step 3: Cross multiply
    485,473.47x = 669,679.05 × 303,870.12
  4. Step 4: Simplify right side
    485,473.47x = 203,495,453,284.99
  5. Step 5: Solve for x
    x = 203,495,453,284.99/485,473.47
  6. Step 6: Final answer
    x = 419,169.05

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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.