Home / 920,654.45-1,381,710.67-388,542.77

Finding the Fourth Proportional to 920,654.45, 1,381,710.67 and 388,542.77

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Solution

The fourth proportional to 920,654.45, 1,381,710.67 and 388,542.77 is: 583,121.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,654.45 : 1,381,710.67 = 388,542.77 : x
  2. Step 2: Convert to fraction form
    920,654.45/1,381,710.67 = 388,542.77/x
  3. Step 3: Cross multiply
    920,654.45x = 1,381,710.67 × 388,542.77
  4. Step 4: Simplify right side
    920,654.45x = 536,853,683,180.45
  5. Step 5: Solve for x
    x = 536,853,683,180.45/920,654.45
  6. Step 6: Final answer
    x = 583,121.81

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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.