Home / 678,518.60-1,017,129.90-251,940.20

Finding the Fourth Proportional to 678,518.60, 1,017,129.90 and 251,940.20

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Solution

The fourth proportional to 678,518.60, 1,017,129.90 and 251,940.20 is: 377,669.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,518.60 : 1,017,129.90 = 251,940.20 : x
  2. Step 2: Convert to fraction form
    678,518.60/1,017,129.90 = 251,940.20/x
  3. Step 3: Cross multiply
    678,518.60x = 1,017,129.90 × 251,940.20
  4. Step 4: Simplify right side
    678,518.60x = 256,255,910,431.98
  5. Step 5: Solve for x
    x = 256,255,910,431.98/678,518.60
  6. Step 6: Final answer
    x = 377,669.69

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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.