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Finding the Fourth Proportional to 526,120.52, 725,992.14 and 388,372.73

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Solution

The fourth proportional to 526,120.52, 725,992.14 and 388,372.73 is: 535,914.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,120.52 : 725,992.14 = 388,372.73 : x
  2. Step 2: Convert to fraction form
    526,120.52/725,992.14 = 388,372.73/x
  3. Step 3: Cross multiply
    526,120.52x = 725,992.14 × 388,372.73
  4. Step 4: Simplify right side
    526,120.52x = 281,955,547,428.48
  5. Step 5: Solve for x
    x = 281,955,547,428.48/526,120.52
  6. Step 6: Final answer
    x = 535,914.37

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1.5x scale

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.