Home / 645,158.91-889,006.33-499,077.33

Finding the Fourth Proportional to 645,158.91, 889,006.33 and 499,077.33

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Solution

The fourth proportional to 645,158.91, 889,006.33 and 499,077.33 is: 687,711.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,158.91 : 889,006.33 = 499,077.33 : x
  2. Step 2: Convert to fraction form
    645,158.91/889,006.33 = 499,077.33/x
  3. Step 3: Cross multiply
    645,158.91x = 889,006.33 × 499,077.33
  4. Step 4: Simplify right side
    645,158.91x = 443,682,905,529.50
  5. Step 5: Solve for x
    x = 443,682,905,529.50/645,158.91
  6. Step 6: Final answer
    x = 687,711.04

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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.