Home / 1,145,405.72-1,581,450.66-715,878.92

Finding the Fourth Proportional to 1,145,405.72, 1,581,450.66 and 715,878.92

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Solution

The fourth proportional to 1,145,405.72, 1,581,450.66 and 715,878.92 is: 988,407.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,405.72 : 1,581,450.66 = 715,878.92 : x
  2. Step 2: Convert to fraction form
    1,145,405.72/1,581,450.66 = 715,878.92/x
  3. Step 3: Cross multiply
    1,145,405.72x = 1,581,450.66 × 715,878.92
  4. Step 4: Simplify right side
    1,145,405.72x = 1,132,127,190,514.09
  5. Step 5: Solve for x
    x = 1,132,127,190,514.09/1,145,405.72
  6. Step 6: Final answer
    x = 988,407.14

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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.