Home / 1,358,138.90-1,874,121.98-785,216

Finding the Fourth Proportional to 1,358,138.90, 1,874,121.98 and 785,216

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Solution

The fourth proportional to 1,358,138.90, 1,874,121.98 and 785,216 is: 1,083,534.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358,138.90 : 1,874,121.98 = 785,216 : x
  2. Step 2: Convert to fraction form
    1,358,138.90/1,874,121.98 = 785,216/x
  3. Step 3: Cross multiply
    1,358,138.90x = 1,874,121.98 × 785,216
  4. Step 4: Simplify right side
    1,358,138.90x = 1,471,590,560,721.60
  5. Step 5: Solve for x
    x = 1,471,590,560,721.60/1,358,138.90
  6. Step 6: Final answer
    x = 1,083,534.65

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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.