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Finding the Fourth Proportional to 455,724, 628,952.55 and 274,527.39

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Solution

The fourth proportional to 455,724, 628,952.55 and 274,527.39 is: 378,879.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,724 : 628,952.55 = 274,527.39 : x
  2. Step 2: Convert to fraction form
    455,724/628,952.55 = 274,527.39/x
  3. Step 3: Cross multiply
    455,724x = 628,952.55 × 274,527.39
  4. Step 4: Simplify right side
    455,724x = 172,664,701,985.35
  5. Step 5: Solve for x
    x = 172,664,701,985.35/455,724
  6. Step 6: Final answer
    x = 378,879.98

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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.