Home / 1,151,853.71-1,589,447.90-642,588.89

Finding the Fourth Proportional to 1,151,853.71, 1,589,447.90 and 642,588.89

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Solution

The fourth proportional to 1,151,853.71, 1,589,447.90 and 642,588.89 is: 886,711.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,151,853.71 : 1,589,447.90 = 642,588.89 : x
  2. Step 2: Convert to fraction form
    1,151,853.71/1,589,447.90 = 642,588.89/x
  3. Step 3: Cross multiply
    1,151,853.71x = 1,589,447.90 × 642,588.89
  4. Step 4: Simplify right side
    1,151,853.71x = 1,021,361,558,560.89
  5. Step 5: Solve for x
    x = 1,021,361,558,560.89/1,151,853.71
  6. Step 6: Final answer
    x = 886,711.18

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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.