Home / 1,215,234.75-1,677,024-678,690.75

Finding the Fourth Proportional to 1,215,234.75, 1,677,024 and 678,690.75

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Solution

The fourth proportional to 1,215,234.75, 1,677,024 and 678,690.75 is: 936,593.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,234.75 : 1,677,024 = 678,690.75 : x
  2. Step 2: Convert to fraction form
    1,215,234.75/1,677,024 = 678,690.75/x
  3. Step 3: Cross multiply
    1,215,234.75x = 1,677,024 × 678,690.75
  4. Step 4: Simplify right side
    1,215,234.75x = 1,138,180,676,328
  5. Step 5: Solve for x
    x = 1,138,180,676,328/1,215,234.75
  6. Step 6: Final answer
    x = 936,593.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.