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Finding the Fourth Proportional to 478,349.55, 660,121.47 and 263,504.07

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Solution

The fourth proportional to 478,349.55, 660,121.47 and 263,504.07 is: 363,635.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,349.55 : 660,121.47 = 263,504.07 : x
  2. Step 2: Convert to fraction form
    478,349.55/660,121.47 = 263,504.07/x
  3. Step 3: Cross multiply
    478,349.55x = 660,121.47 × 263,504.07
  4. Step 4: Simplify right side
    478,349.55x = 173,944,694,039.38
  5. Step 5: Solve for x
    x = 173,944,694,039.38/478,349.55
  6. Step 6: Final answer
    x = 363,635.12

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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.