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Finding the Fourth Proportional to 478,914.99, 660,930.60 and 274,966.30

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Solution

The fourth proportional to 478,914.99, 660,930.60 and 274,966.30 is: 379,469.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,914.99 : 660,930.60 = 274,966.30 : x
  2. Step 2: Convert to fraction form
    478,914.99/660,930.60 = 274,966.30/x
  3. Step 3: Cross multiply
    478,914.99x = 660,930.60 × 274,966.30
  4. Step 4: Simplify right side
    478,914.99x = 181,733,641,638.78
  5. Step 5: Solve for x
    x = 181,733,641,638.78/478,914.99
  6. Step 6: Final answer
    x = 379,469.52

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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.