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Finding the Fourth Proportional to 451,734, 623,506.20 and 306,785.04

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Solution

The fourth proportional to 451,734, 623,506.20 and 306,785.04 is: 423,440.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,734 : 623,506.20 = 306,785.04 : x
  2. Step 2: Convert to fraction form
    451,734/623,506.20 = 306,785.04/x
  3. Step 3: Cross multiply
    451,734x = 623,506.20 × 306,785.04
  4. Step 4: Simplify right side
    451,734x = 191,282,374,507.25
  5. Step 5: Solve for x
    x = 191,282,374,507.25/451,734
  6. Step 6: Final answer
    x = 423,440.29

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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.