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Finding the Fourth Proportional to 642,801.80, 887,060.53 and 352,429.50

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Solution

The fourth proportional to 642,801.80, 887,060.53 and 352,429.50 is: 486,349.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,801.80 : 887,060.53 = 352,429.50 : x
  2. Step 2: Convert to fraction form
    642,801.80/887,060.53 = 352,429.50/x
  3. Step 3: Cross multiply
    642,801.80x = 887,060.53 × 352,429.50
  4. Step 4: Simplify right side
    642,801.80x = 312,626,295,412.56
  5. Step 5: Solve for x
    x = 312,626,295,412.56/642,801.80
  6. Step 6: Final answer
    x = 486,349.44

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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.