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Finding the Fourth Proportional to 685,253.06, 945,637.72 and 379,322.88

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Solution

The fourth proportional to 685,253.06, 945,637.72 and 379,322.88 is: 523,459.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,253.06 : 945,637.72 = 379,322.88 : x
  2. Step 2: Convert to fraction form
    685,253.06/945,637.72 = 379,322.88/x
  3. Step 3: Cross multiply
    685,253.06x = 945,637.72 × 379,322.88
  4. Step 4: Simplify right side
    685,253.06x = 358,702,023,387.03
  5. Step 5: Solve for x
    x = 358,702,023,387.03/685,253.06
  6. Step 6: Final answer
    x = 523,459.21

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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.