Home / 678,976.10-1,018,931.22-279,616.82

Finding the Fourth Proportional to 678,976.10, 1,018,931.22 and 279,616.82

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Solution

The fourth proportional to 678,976.10, 1,018,931.22 and 279,616.82 is: 419,617.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,976.10 : 1,018,931.22 = 279,616.82 : x
  2. Step 2: Convert to fraction form
    678,976.10/1,018,931.22 = 279,616.82/x
  3. Step 3: Cross multiply
    678,976.10x = 1,018,931.22 × 279,616.82
  4. Step 4: Simplify right side
    678,976.10x = 284,910,302,440.46
  5. Step 5: Solve for x
    x = 284,910,302,440.46/678,976.10
  6. Step 6: Final answer
    x = 419,617.57

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1.5x scale

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.