Home / 772,709.40-1,159,640.10-398,539.80

Finding the Fourth Proportional to 772,709.40, 1,159,640.10 and 398,539.80

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Solution

The fourth proportional to 772,709.40, 1,159,640.10 and 398,539.80 is: 598,106.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,709.40 : 1,159,640.10 = 398,539.80 : x
  2. Step 2: Convert to fraction form
    772,709.40/1,159,640.10 = 398,539.80/x
  3. Step 3: Cross multiply
    772,709.40x = 1,159,640.10 × 398,539.80
  4. Step 4: Simplify right side
    772,709.40x = 462,162,733,525.98
  5. Step 5: Solve for x
    x = 462,162,733,525.98/772,709.40
  6. Step 6: Final answer
    x = 598,106.78

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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.