Home / 920,768.30-1,270,856.31-618,787.34

Finding the Fourth Proportional to 920,768.30, 1,270,856.31 and 618,787.34

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Solution

The fourth proportional to 920,768.30, 1,270,856.31 and 618,787.34 is: 854,058.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,768.30 : 1,270,856.31 = 618,787.34 : x
  2. Step 2: Convert to fraction form
    920,768.30/1,270,856.31 = 618,787.34/x
  3. Step 3: Cross multiply
    920,768.30x = 1,270,856.31 × 618,787.34
  4. Step 4: Simplify right side
    920,768.30x = 786,389,795,587.12
  5. Step 5: Solve for x
    x = 786,389,795,587.12/920,768.30
  6. Step 6: Final answer
    x = 854,058.29

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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.