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Finding the Fourth Proportional to 491,568.70, 678,002.62 and 370,715.08

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Solution

The fourth proportional to 491,568.70, 678,002.62 and 370,715.08 is: 511,313.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,568.70 : 678,002.62 = 370,715.08 : x
  2. Step 2: Convert to fraction form
    491,568.70/678,002.62 = 370,715.08/x
  3. Step 3: Cross multiply
    491,568.70x = 678,002.62 × 370,715.08
  4. Step 4: Simplify right side
    491,568.70x = 251,345,795,513.51
  5. Step 5: Solve for x
    x = 251,345,795,513.51/491,568.70
  6. Step 6: Final answer
    x = 511,313.67

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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.