Home / 870,586.37-1,305,435.40-511,458.95

Finding the Fourth Proportional to 870,586.37, 1,305,435.40 and 511,458.95

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Solution

The fourth proportional to 870,586.37, 1,305,435.40 and 511,458.95 is: 766,927.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,586.37 : 1,305,435.40 = 511,458.95 : x
  2. Step 2: Convert to fraction form
    870,586.37/1,305,435.40 = 511,458.95/x
  3. Step 3: Cross multiply
    870,586.37x = 1,305,435.40 × 511,458.95
  4. Step 4: Simplify right side
    870,586.37x = 667,676,620,961.77
  5. Step 5: Solve for x
    x = 667,676,620,961.77/870,586.37
  6. Step 6: Final answer
    x = 766,927.49

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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.