Home / 1,296,101.20-1,788,535.74-715,329.58

Finding the Fourth Proportional to 1,296,101.20, 1,788,535.74 and 715,329.58

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Solution

The fourth proportional to 1,296,101.20, 1,788,535.74 and 715,329.58 is: 987,108.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,101.20 : 1,788,535.74 = 715,329.58 : x
  2. Step 2: Convert to fraction form
    1,296,101.20/1,788,535.74 = 715,329.58/x
  3. Step 3: Cross multiply
    1,296,101.20x = 1,788,535.74 × 715,329.58
  4. Step 4: Simplify right side
    1,296,101.20x = 1,279,392,519,709.19
  5. Step 5: Solve for x
    x = 1,279,392,519,709.19/1,296,101.20
  6. Step 6: Final answer
    x = 987,108.51

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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.