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Finding the Fourth Proportional to 1,369,733.58, 1,890,992.48 and 826,007.09

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Solution

The fourth proportional to 1,369,733.58, 1,890,992.48 and 826,007.09 is: 1,140,348.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369,733.58 : 1,890,992.48 = 826,007.09 : x
  2. Step 2: Convert to fraction form
    1,369,733.58/1,890,992.48 = 826,007.09/x
  3. Step 3: Cross multiply
    1,369,733.58x = 1,890,992.48 × 826,007.09
  4. Step 4: Simplify right side
    1,369,733.58x = 1,561,973,182,031.69
  5. Step 5: Solve for x
    x = 1,561,973,182,031.69/1,369,733.58
  6. Step 6: Final answer
    x = 1,140,348.17

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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.