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Finding the Fourth Proportional to 685,251.12, 945,648.72 and 370,922.88

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Solution

The fourth proportional to 685,251.12, 945,648.72 and 370,922.88 is: 511,874.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,251.12 : 945,648.72 = 370,922.88 : x
  2. Step 2: Convert to fraction form
    685,251.12/945,648.72 = 370,922.88/x
  3. Step 3: Cross multiply
    685,251.12x = 945,648.72 × 370,922.88
  4. Step 4: Simplify right side
    685,251.12x = 350,762,746,690.71
  5. Step 5: Solve for x
    x = 350,762,746,690.71/685,251.12
  6. Step 6: Final answer
    x = 511,874.75

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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.