Home / 1,029,147.76-1,420,223.90-626,739.76

Finding the Fourth Proportional to 1,029,147.76, 1,420,223.90 and 626,739.76

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Solution

The fourth proportional to 1,029,147.76, 1,420,223.90 and 626,739.76 is: 864,900.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029,147.76 : 1,420,223.90 = 626,739.76 : x
  2. Step 2: Convert to fraction form
    1,029,147.76/1,420,223.90 = 626,739.76/x
  3. Step 3: Cross multiply
    1,029,147.76x = 1,420,223.90 × 626,739.76
  4. Step 4: Simplify right side
    1,029,147.76x = 890,110,786,232.26
  5. Step 5: Solve for x
    x = 890,110,786,232.26/1,029,147.76
  6. Step 6: Final answer
    x = 864,900.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.