Home / 920,568-1,380,901.21-289,531.02

Finding the Fourth Proportional to 920,568, 1,380,901.21 and 289,531.02

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Solution

The fourth proportional to 920,568, 1,380,901.21 and 289,531.02 is: 434,312.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,568 : 1,380,901.21 = 289,531.02 : x
  2. Step 2: Convert to fraction form
    920,568/1,380,901.21 = 289,531.02/x
  3. Step 3: Cross multiply
    920,568x = 1,380,901.21 × 289,531.02
  4. Step 4: Simplify right side
    920,568x = 399,813,735,850.53
  5. Step 5: Solve for x
    x = 399,813,735,850.53/920,568
  6. Step 6: Final answer
    x = 434,312.01

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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.