Home / 857,153.69-1,285,533.78-511,035.11

Finding the Fourth Proportional to 857,153.69, 1,285,533.78 and 511,035.11

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Solution

The fourth proportional to 857,153.69, 1,285,533.78 and 511,035.11 is: 766,435.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,153.69 : 1,285,533.78 = 511,035.11 : x
  2. Step 2: Convert to fraction form
    857,153.69/1,285,533.78 = 511,035.11/x
  3. Step 3: Cross multiply
    857,153.69x = 1,285,533.78 × 511,035.11
  4. Step 4: Simplify right side
    857,153.69x = 656,952,890,243.35
  5. Step 5: Solve for x
    x = 656,952,890,243.35/857,153.69
  6. Step 6: Final answer
    x = 766,435.35

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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.