Home / 812,879.32-1,220,075.53-413,818.85

Finding the Fourth Proportional to 812,879.32, 1,220,075.53 and 413,818.85

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Solution

The fourth proportional to 812,879.32, 1,220,075.53 and 413,818.85 is: 621,113.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,879.32 : 1,220,075.53 = 413,818.85 : x
  2. Step 2: Convert to fraction form
    812,879.32/1,220,075.53 = 413,818.85/x
  3. Step 3: Cross multiply
    812,879.32x = 1,220,075.53 × 413,818.85
  4. Step 4: Simplify right side
    812,879.32x = 504,890,245,602.82
  5. Step 5: Solve for x
    x = 504,890,245,602.82/812,879.32
  6. Step 6: Final answer
    x = 621,113.41

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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.