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Finding the Fourth Proportional to 667,597.94, 921,322.05 and 381,210.02

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Solution

The fourth proportional to 667,597.94, 921,322.05 and 381,210.02 is: 526,090.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,597.94 : 921,322.05 = 381,210.02 : x
  2. Step 2: Convert to fraction form
    667,597.94/921,322.05 = 381,210.02/x
  3. Step 3: Cross multiply
    667,597.94x = 921,322.05 × 381,210.02
  4. Step 4: Simplify right side
    667,597.94x = 351,217,197,106.94
  5. Step 5: Solve for x
    x = 351,217,197,106.94/667,597.94
  6. Step 6: Final answer
    x = 526,090.89

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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.