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Finding the Fourth Proportional to 526,795.74, 726,978.12 and 285,078.30

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Solution

The fourth proportional to 526,795.74, 726,978.12 and 285,078.30 is: 393,408.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,795.74 : 726,978.12 = 285,078.30 : x
  2. Step 2: Convert to fraction form
    526,795.74/726,978.12 = 285,078.30/x
  3. Step 3: Cross multiply
    526,795.74x = 726,978.12 × 285,078.30
  4. Step 4: Simplify right side
    526,795.74x = 207,245,686,586.80
  5. Step 5: Solve for x
    x = 207,245,686,586.80/526,795.74
  6. Step 6: Final answer
    x = 393,408.05

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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.