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Finding the Fourth Proportional to 691,302.32, 954,054 and 381,265.54

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Solution

The fourth proportional to 691,302.32, 954,054 and 381,265.54 is: 526,177.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,302.32 : 954,054 = 381,265.54 : x
  2. Step 2: Convert to fraction form
    691,302.32/954,054 = 381,265.54/x
  3. Step 3: Cross multiply
    691,302.32x = 954,054 × 381,265.54
  4. Step 4: Simplify right side
    691,302.32x = 363,747,913,499.16
  5. Step 5: Solve for x
    x = 363,747,913,499.16/691,302.32
  6. Step 6: Final answer
    x = 526,177.77

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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.