Home / 644,876.46-889,923.06-358,390.80

Finding the Fourth Proportional to 644,876.46, 889,923.06 and 358,390.80

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Solution

The fourth proportional to 644,876.46, 889,923.06 and 358,390.80 is: 494,575.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,876.46 : 889,923.06 = 358,390.80 : x
  2. Step 2: Convert to fraction form
    644,876.46/889,923.06 = 358,390.80/x
  3. Step 3: Cross multiply
    644,876.46x = 889,923.06 × 358,390.80
  4. Step 4: Simplify right side
    644,876.46x = 318,940,237,411.85
  5. Step 5: Solve for x
    x = 318,940,237,411.85/644,876.46
  6. Step 6: Final answer
    x = 494,575.72

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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.