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Finding the Fourth Proportional to 478,481.47, 660,400.05 and 274,670.18

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Solution

The fourth proportional to 478,481.47, 660,400.05 and 274,670.18 is: 379,099.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,481.47 : 660,400.05 = 274,670.18 : x
  2. Step 2: Convert to fraction form
    478,481.47/660,400.05 = 274,670.18/x
  3. Step 3: Cross multiply
    478,481.47x = 660,400.05 × 274,670.18
  4. Step 4: Simplify right side
    478,481.47x = 181,392,200,605.51
  5. Step 5: Solve for x
    x = 181,392,200,605.51/478,481.47
  6. Step 6: Final answer
    x = 379,099.74

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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.