Home / 1,215,021.42-1,676,712.09-663,730.44

Finding the Fourth Proportional to 1,215,021.42, 1,676,712.09 and 663,730.44

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Solution

The fourth proportional to 1,215,021.42, 1,676,712.09 and 663,730.44 is: 915,938.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,021.42 : 1,676,712.09 = 663,730.44 : x
  2. Step 2: Convert to fraction form
    1,215,021.42/1,676,712.09 = 663,730.44/x
  3. Step 3: Cross multiply
    1,215,021.42x = 1,676,712.09 × 663,730.44
  4. Step 4: Simplify right side
    1,215,021.42x = 1,112,884,853,249.02
  5. Step 5: Solve for x
    x = 1,112,884,853,249.02/1,215,021.42
  6. Step 6: Final answer
    x = 915,938.46

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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.