Home / 678,783.29-1,018,396.14-323,751.18

Finding the Fourth Proportional to 678,783.29, 1,018,396.14 and 323,751.18

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Solution

The fourth proportional to 678,783.29, 1,018,396.14 and 323,751.18 is: 485,732.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,783.29 : 1,018,396.14 = 323,751.18 : x
  2. Step 2: Convert to fraction form
    678,783.29/1,018,396.14 = 323,751.18/x
  3. Step 3: Cross multiply
    678,783.29x = 1,018,396.14 × 323,751.18
  4. Step 4: Simplify right side
    678,783.29x = 329,706,950,729.99
  5. Step 5: Solve for x
    x = 329,706,950,729.99/678,783.29
  6. Step 6: Final answer
    x = 485,732.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.