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Finding the Fourth Proportional to 478,644.52, 660,521.54 and 274,687.08

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Solution

The fourth proportional to 478,644.52, 660,521.54 and 274,687.08 is: 379,063.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,644.52 : 660,521.54 = 274,687.08 : x
  2. Step 2: Convert to fraction form
    478,644.52/660,521.54 = 274,687.08/x
  3. Step 3: Cross multiply
    478,644.52x = 660,521.54 × 274,687.08
  4. Step 4: Simplify right side
    478,644.52x = 181,436,733,099.70
  5. Step 5: Solve for x
    x = 181,436,733,099.70/478,644.52
  6. Step 6: Final answer
    x = 379,063.64

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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.