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Finding the Fourth Proportional to 542,992.43, 749,438.58 and 313,587.06

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Solution

The fourth proportional to 542,992.43, 749,438.58 and 313,587.06 is: 432,813.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,992.43 : 749,438.58 = 313,587.06 : x
  2. Step 2: Convert to fraction form
    542,992.43/749,438.58 = 313,587.06/x
  3. Step 3: Cross multiply
    542,992.43x = 749,438.58 × 313,587.06
  4. Step 4: Simplify right side
    542,992.43x = 235,014,240,952.78
  5. Step 5: Solve for x
    x = 235,014,240,952.78/542,992.43
  6. Step 6: Final answer
    x = 432,813.11

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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.