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Finding the Fourth Proportional to 472,449.36, 651,993.19 and 288,717.67

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Solution

The fourth proportional to 472,449.36, 651,993.19 and 288,717.67 is: 398,438.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,449.36 : 651,993.19 = 288,717.67 : x
  2. Step 2: Convert to fraction form
    472,449.36/651,993.19 = 288,717.67/x
  3. Step 3: Cross multiply
    472,449.36x = 651,993.19 × 288,717.67
  4. Step 4: Simplify right side
    472,449.36x = 188,241,951,412.70
  5. Step 5: Solve for x
    x = 188,241,951,412.70/472,449.36
  6. Step 6: Final answer
    x = 398,438.37

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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.