Home / 1,409,780.31-1,945,498.78-765,200.64

Finding the Fourth Proportional to 1,409,780.31, 1,945,498.78 and 765,200.64

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Solution

The fourth proportional to 1,409,780.31, 1,945,498.78 and 765,200.64 is: 1,055,977.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409,780.31 : 1,945,498.78 = 765,200.64 : x
  2. Step 2: Convert to fraction form
    1,409,780.31/1,945,498.78 = 765,200.64/x
  3. Step 3: Cross multiply
    1,409,780.31x = 1,945,498.78 × 765,200.64
  4. Step 4: Simplify right side
    1,409,780.31x = 1,488,696,911,575.22
  5. Step 5: Solve for x
    x = 1,488,696,911,575.22/1,409,780.31
  6. Step 6: Final answer
    x = 1,055,977.94

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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.