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Finding the Fourth Proportional to 637,926.28, 880,378 and 351,446.28

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Solution

The fourth proportional to 637,926.28, 880,378 and 351,446.28 is: 485,017.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,926.28 : 880,378 = 351,446.28 : x
  2. Step 2: Convert to fraction form
    637,926.28/880,378 = 351,446.28/x
  3. Step 3: Cross multiply
    637,926.28x = 880,378 × 351,446.28
  4. Step 4: Simplify right side
    637,926.28x = 309,405,573,093.84
  5. Step 5: Solve for x
    x = 309,405,573,093.84/637,926.28
  6. Step 6: Final answer
    x = 485,017.76

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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.