Home / 1,131,689.34-1,561,348.68-641,606.28

Finding the Fourth Proportional to 1,131,689.34, 1,561,348.68 and 641,606.28

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Solution

The fourth proportional to 1,131,689.34, 1,561,348.68 and 641,606.28 is: 885,199.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,689.34 : 1,561,348.68 = 641,606.28 : x
  2. Step 2: Convert to fraction form
    1,131,689.34/1,561,348.68 = 641,606.28/x
  3. Step 3: Cross multiply
    1,131,689.34x = 1,561,348.68 × 641,606.28
  4. Step 4: Simplify right side
    1,131,689.34x = 1,001,771,118,357.71
  5. Step 5: Solve for x
    x = 1,001,771,118,357.71/1,131,689.34
  6. Step 6: Final answer
    x = 885,199.75

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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.