Home / 1,398,392.06-1,929,838.68-786,573.38

Finding the Fourth Proportional to 1,398,392.06, 1,929,838.68 and 786,573.38

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Solution

The fourth proportional to 1,398,392.06, 1,929,838.68 and 786,573.38 is: 1,085,503.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,392.06 : 1,929,838.68 = 786,573.38 : x
  2. Step 2: Convert to fraction form
    1,398,392.06/1,929,838.68 = 786,573.38/x
  3. Step 3: Cross multiply
    1,398,392.06x = 1,929,838.68 × 786,573.38
  4. Step 4: Simplify right side
    1,398,392.06x = 1,517,959,733,382.34
  5. Step 5: Solve for x
    x = 1,517,959,733,382.34/1,398,392.06
  6. Step 6: Final answer
    x = 1,085,503.68

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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.