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Finding the Fourth Proportional to 691,626.87, 954,449.28 and 385,722.72

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Solution

The fourth proportional to 691,626.87, 954,449.28 and 385,722.72 is: 532,299.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,626.87 : 954,449.28 = 385,722.72 : x
  2. Step 2: Convert to fraction form
    691,626.87/954,449.28 = 385,722.72/x
  3. Step 3: Cross multiply
    691,626.87x = 954,449.28 × 385,722.72
  4. Step 4: Simplify right side
    691,626.87x = 368,152,772,383.64
  5. Step 5: Solve for x
    x = 368,152,772,383.64/691,626.87
  6. Step 6: Final answer
    x = 532,299.70

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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.