Home / 1,131,530.45-1,561,129.84-641,447.40

Finding the Fourth Proportional to 1,131,530.45, 1,561,129.84 and 641,447.40

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Solution

The fourth proportional to 1,131,530.45, 1,561,129.84 and 641,447.40 is: 884,980.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,530.45 : 1,561,129.84 = 641,447.40 : x
  2. Step 2: Convert to fraction form
    1,131,530.45/1,561,129.84 = 641,447.40/x
  3. Step 3: Cross multiply
    1,131,530.45x = 1,561,129.84 × 641,447.40
  4. Step 4: Simplify right side
    1,131,530.45x = 1,001,382,683,586.46
  5. Step 5: Solve for x
    x = 1,001,382,683,586.46/1,131,530.45
  6. Step 6: Final answer
    x = 884,980.77

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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.