Home / 920,653.70-1,381,709.54-388,542.02

Finding the Fourth Proportional to 920,653.70, 1,381,709.54 and 388,542.02

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Solution

The fourth proportional to 920,653.70, 1,381,709.54 and 388,542.02 is: 583,120.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,653.70 : 1,381,709.54 = 388,542.02 : x
  2. Step 2: Convert to fraction form
    920,653.70/1,381,709.54 = 388,542.02/x
  3. Step 3: Cross multiply
    920,653.70x = 1,381,709.54 × 388,542.02
  4. Step 4: Simplify right side
    920,653.70x = 536,852,209,787.68
  5. Step 5: Solve for x
    x = 536,852,209,787.68/920,653.70
  6. Step 6: Final answer
    x = 583,120.68

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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.