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Finding the Fourth Proportional to 538,969.51, 807,567.58 and 427,366.63

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Solution

The fourth proportional to 538,969.51, 807,567.58 and 427,366.63 is: 640,346.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,969.51 : 807,567.58 = 427,366.63 : x
  2. Step 2: Convert to fraction form
    538,969.51/807,567.58 = 427,366.63/x
  3. Step 3: Cross multiply
    538,969.51x = 807,567.58 × 427,366.63
  4. Step 4: Simplify right side
    538,969.51x = 345,127,435,161.86
  5. Step 5: Solve for x
    x = 345,127,435,161.86/538,969.51
  6. Step 6: Final answer
    x = 640,346.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.