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Finding the Fourth Proportional to 526,790.85, 726,971.35 and 285,073.42

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Solution

The fourth proportional to 526,790.85, 726,971.35 and 285,073.42 is: 393,401.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,790.85 : 726,971.35 = 285,073.42 : x
  2. Step 2: Convert to fraction form
    526,790.85/726,971.35 = 285,073.42/x
  3. Step 3: Cross multiply
    526,790.85x = 726,971.35 × 285,073.42
  4. Step 4: Simplify right side
    526,790.85x = 207,240,205,351.66
  5. Step 5: Solve for x
    x = 207,240,205,351.66/526,790.85
  6. Step 6: Final answer
    x = 393,401.30

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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.