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Finding the Fourth Proportional to 486,095.33, 670,711.39 and 279,323.77

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Solution

The fourth proportional to 486,095.33, 670,711.39 and 279,323.77 is: 385,409.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,095.33 : 670,711.39 = 279,323.77 : x
  2. Step 2: Convert to fraction form
    486,095.33/670,711.39 = 279,323.77/x
  3. Step 3: Cross multiply
    486,095.33x = 670,711.39 × 279,323.77
  4. Step 4: Simplify right side
    486,095.33x = 187,345,632,640.12
  5. Step 5: Solve for x
    x = 187,345,632,640.12/486,095.33
  6. Step 6: Final answer
    x = 385,409.24

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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.