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Finding the Fourth Proportional to 1,159,903, 1,600,662.84 and 643,734.88

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Solution

The fourth proportional to 1,159,903, 1,600,662.84 and 643,734.88 is: 888,352.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,159,903 : 1,600,662.84 = 643,734.88 : x
  2. Step 2: Convert to fraction form
    1,159,903/1,600,662.84 = 643,734.88/x
  3. Step 3: Cross multiply
    1,159,903x = 1,600,662.84 × 643,734.88
  4. Step 4: Simplify right side
    1,159,903x = 1,030,402,501,227.86
  5. Step 5: Solve for x
    x = 1,030,402,501,227.86/1,159,903
  6. Step 6: Final answer
    x = 888,352.30

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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.