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Finding the Fourth Proportional to 811,652, 1,120,083.60 and 453,956

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Solution

The fourth proportional to 811,652, 1,120,083.60 and 453,956 is: 626,461.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,652 : 1,120,083.60 = 453,956 : x
  2. Step 2: Convert to fraction form
    811,652/1,120,083.60 = 453,956/x
  3. Step 3: Cross multiply
    811,652x = 1,120,083.60 × 453,956
  4. Step 4: Simplify right side
    811,652x = 508,468,670,721.60
  5. Step 5: Solve for x
    x = 508,468,670,721.60/811,652
  6. Step 6: Final answer
    x = 626,461.43

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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.