Home / 645,961.32-890,502.80-454,380.12

Finding the Fourth Proportional to 645,961.32, 890,502.80 and 454,380.12

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Solution

The fourth proportional to 645,961.32, 890,502.80 and 454,380.12 is: 626,394.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,961.32 : 890,502.80 = 454,380.12 : x
  2. Step 2: Convert to fraction form
    645,961.32/890,502.80 = 454,380.12/x
  3. Step 3: Cross multiply
    645,961.32x = 890,502.80 × 454,380.12
  4. Step 4: Simplify right side
    645,961.32x = 404,626,766,852.44
  5. Step 5: Solve for x
    x = 404,626,766,852.44/645,961.32
  6. Step 6: Final answer
    x = 626,394.73

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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.