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Finding the Fourth Proportional to 485,433, 669,920.52 and 270,574.56

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Solution

The fourth proportional to 485,433, 669,920.52 and 270,574.56 is: 373,405.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,433 : 669,920.52 = 270,574.56 : x
  2. Step 2: Convert to fraction form
    485,433/669,920.52 = 270,574.56/x
  3. Step 3: Cross multiply
    485,433x = 669,920.52 × 270,574.56
  4. Step 4: Simplify right side
    485,433x = 181,263,449,933.97
  5. Step 5: Solve for x
    x = 181,263,449,933.97/485,433
  6. Step 6: Final answer
    x = 373,405.70

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1.5x scale

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.