Home / 644,460.46-889,212.26-389,806.18

Finding the Fourth Proportional to 644,460.46, 889,212.26 and 389,806.18

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Solution

The fourth proportional to 644,460.46, 889,212.26 and 389,806.18 is: 537,845.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,460.46 : 889,212.26 = 389,806.18 : x
  2. Step 2: Convert to fraction form
    644,460.46/889,212.26 = 389,806.18/x
  3. Step 3: Cross multiply
    644,460.46x = 889,212.26 × 389,806.18
  4. Step 4: Simplify right side
    644,460.46x = 346,620,434,279.77
  5. Step 5: Solve for x
    x = 346,620,434,279.77/644,460.46
  6. Step 6: Final answer
    x = 537,845.93

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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.