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Finding the Fourth Proportional to 478,678.29, 660,602.03 and 274,727.58

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Solution

The fourth proportional to 478,678.29, 660,602.03 and 274,727.58 is: 379,138.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,678.29 : 660,602.03 = 274,727.58 : x
  2. Step 2: Convert to fraction form
    478,678.29/660,602.03 = 274,727.58/x
  3. Step 3: Cross multiply
    478,678.29x = 660,602.03 × 274,727.58
  4. Step 4: Simplify right side
    478,678.29x = 181,485,595,671.35
  5. Step 5: Solve for x
    x = 181,485,595,671.35/478,678.29
  6. Step 6: Final answer
    x = 379,138.97

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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.