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Finding the Fourth Proportional to 777,221.22, 1,072,567.71 and 450,597.90

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Solution

The fourth proportional to 777,221.22, 1,072,567.71 and 450,597.90 is: 621,826.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,221.22 : 1,072,567.71 = 450,597.90 : x
  2. Step 2: Convert to fraction form
    777,221.22/1,072,567.71 = 450,597.90/x
  3. Step 3: Cross multiply
    777,221.22x = 1,072,567.71 × 450,597.90
  4. Step 4: Simplify right side
    777,221.22x = 483,296,757,733.81
  5. Step 5: Solve for x
    x = 483,296,757,733.81/777,221.22
  6. Step 6: Final answer
    x = 621,826.51

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1.5x scale

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.