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Finding the Fourth Proportional to 685,253.12, 945,651.48 and 370,924.88

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Solution

The fourth proportional to 685,253.12, 945,651.48 and 370,924.88 is: 511,877.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,253.12 : 945,651.48 = 370,924.88 : x
  2. Step 2: Convert to fraction form
    685,253.12/945,651.48 = 370,924.88/x
  3. Step 3: Cross multiply
    685,253.12x = 945,651.48 × 370,924.88
  4. Step 4: Simplify right side
    685,253.12x = 350,765,661,740.82
  5. Step 5: Solve for x
    x = 350,765,661,740.82/685,253.12
  6. Step 6: Final answer
    x = 511,877.51

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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.