Home / 678,897.12-1,018,394.88-205,619.38

Finding the Fourth Proportional to 678,897.12, 1,018,394.88 and 205,619.38

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Solution

The fourth proportional to 678,897.12, 1,018,394.88 and 205,619.38 is: 308,443.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,897.12 : 1,018,394.88 = 205,619.38 : x
  2. Step 2: Convert to fraction form
    678,897.12/1,018,394.88 = 205,619.38/x
  3. Step 3: Cross multiply
    678,897.12x = 1,018,394.88 × 205,619.38
  4. Step 4: Simplify right side
    678,897.12x = 209,401,723,820.77
  5. Step 5: Solve for x
    x = 209,401,723,820.77/678,897.12
  6. Step 6: Final answer
    x = 308,443.97

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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.