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Finding the Fourth Proportional to 643,098.96, 887,526.72 and 356,675.04

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Solution

The fourth proportional to 643,098.96, 887,526.72 and 356,675.04 is: 492,239.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,098.96 : 887,526.72 = 356,675.04 : x
  2. Step 2: Convert to fraction form
    643,098.96/887,526.72 = 356,675.04/x
  3. Step 3: Cross multiply
    643,098.96x = 887,526.72 × 356,675.04
  4. Step 4: Simplify right side
    643,098.96x = 316,558,628,357.07
  5. Step 5: Solve for x
    x = 316,558,628,357.07/643,098.96
  6. Step 6: Final answer
    x = 492,239.37

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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.