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Finding the Fourth Proportional to 587,035.58, 809,751.03 and 388,124.11

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Solution

The fourth proportional to 587,035.58, 809,751.03 and 388,124.11 is: 535,374.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,035.58 : 809,751.03 = 388,124.11 : x
  2. Step 2: Convert to fraction form
    587,035.58/809,751.03 = 388,124.11/x
  3. Step 3: Cross multiply
    587,035.58x = 809,751.03 × 388,124.11
  4. Step 4: Simplify right side
    587,035.58x = 314,283,897,397.06
  5. Step 5: Solve for x
    x = 314,283,897,397.06/587,035.58
  6. Step 6: Final answer
    x = 535,374.53

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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.