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Finding the Fourth Proportional to 458,467.92, 632,949.12 and 305,465.76

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Solution

The fourth proportional to 458,467.92, 632,949.12 and 305,465.76 is: 421,718.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,467.92 : 632,949.12 = 305,465.76 : x
  2. Step 2: Convert to fraction form
    458,467.92/632,949.12 = 305,465.76/x
  3. Step 3: Cross multiply
    458,467.92x = 632,949.12 × 305,465.76
  4. Step 4: Simplify right side
    458,467.92x = 193,344,283,982.13
  5. Step 5: Solve for x
    x = 193,344,283,982.13/458,467.92
  6. Step 6: Final answer
    x = 421,718.24

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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.