Home / 392,920,961.38-589,790,237.92-289,407,051.06

Finding the Fourth Proportional to 392,920,961.38, 589,790,237.92 and 289,407,051.06

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Solution

The fourth proportional to 392,920,961.38, 589,790,237.92 and 289,407,051.06 is: 434,411,676.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,920,961.38 : 589,790,237.92 = 289,407,051.06 : x
  2. Step 2: Convert to fraction form
    392,920,961.38/589,790,237.92 = 289,407,051.06/x
  3. Step 3: Cross multiply
    392,920,961.38x = 589,790,237.92 × 289,407,051.06
  4. Step 4: Simplify right side
    392,920,961.38x = 170,689,453,500,402,976
  5. Step 5: Solve for x
    x = 170,689,453,500,402,976/392,920,961.38
  6. Step 6: Final answer
    x = 434,411,676.34

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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.