Home / 678,835.50-1,018,384.26-258,078.60

Finding the Fourth Proportional to 678,835.50, 1,018,384.26 and 258,078.60

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Solution

The fourth proportional to 678,835.50, 1,018,384.26 and 258,078.60 is: 387,167.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,835.50 : 1,018,384.26 = 258,078.60 : x
  2. Step 2: Convert to fraction form
    678,835.50/1,018,384.26 = 258,078.60/x
  3. Step 3: Cross multiply
    678,835.50x = 1,018,384.26 × 258,078.60
  4. Step 4: Simplify right side
    678,835.50x = 262,823,184,082.84
  5. Step 5: Solve for x
    x = 262,823,184,082.84/678,835.50
  6. Step 6: Final answer
    x = 387,167.71

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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.