Home / 1,391,203.62-1,919,768.85-770,967.18

Finding the Fourth Proportional to 1,391,203.62, 1,919,768.85 and 770,967.18

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Solution

The fourth proportional to 1,391,203.62, 1,919,768.85 and 770,967.18 is: 1,063,883.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,203.62 : 1,919,768.85 = 770,967.18 : x
  2. Step 2: Convert to fraction form
    1,391,203.62/1,919,768.85 = 770,967.18/x
  3. Step 3: Cross multiply
    1,391,203.62x = 1,919,768.85 × 770,967.18
  4. Step 4: Simplify right side
    1,391,203.62x = 1,480,078,776,536.34
  5. Step 5: Solve for x
    x = 1,480,078,776,536.34/1,391,203.62
  6. Step 6: Final answer
    x = 1,063,883.64

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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.