Home / 1,039,725.91-1,559,737.64-320,128.50

Finding the Fourth Proportional to 1,039,725.91, 1,559,737.64 and 320,128.50

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Solution

The fourth proportional to 1,039,725.91, 1,559,737.64 and 320,128.50 is: 480,238.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039,725.91 : 1,559,737.64 = 320,128.50 : x
  2. Step 2: Convert to fraction form
    1,039,725.91/1,559,737.64 = 320,128.50/x
  3. Step 3: Cross multiply
    1,039,725.91x = 1,559,737.64 × 320,128.50
  4. Step 4: Simplify right side
    1,039,725.91x = 499,316,469,486.10
  5. Step 5: Solve for x
    x = 499,316,469,486.10/1,039,725.91
  6. Step 6: Final answer
    x = 480,238.56

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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.