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Finding the Fourth Proportional to 450,622.01, 621,858.93 and 280,856

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Solution

The fourth proportional to 450,622.01, 621,858.93 and 280,856 is: 387,581.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,622.01 : 621,858.93 = 280,856 : x
  2. Step 2: Convert to fraction form
    450,622.01/621,858.93 = 280,856/x
  3. Step 3: Cross multiply
    450,622.01x = 621,858.93 × 280,856
  4. Step 4: Simplify right side
    450,622.01x = 174,652,811,644.08
  5. Step 5: Solve for x
    x = 174,652,811,644.08/450,622.01
  6. Step 6: Final answer
    x = 387,581.63

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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.