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Finding the Fourth Proportional to 478,124.56, 659,816.76 and 263,284.57

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Solution

The fourth proportional to 478,124.56, 659,816.76 and 263,284.57 is: 363,335.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,124.56 : 659,816.76 = 263,284.57 : x
  2. Step 2: Convert to fraction form
    478,124.56/659,816.76 = 263,284.57/x
  3. Step 3: Cross multiply
    478,124.56x = 659,816.76 × 263,284.57
  4. Step 4: Simplify right side
    478,124.56x = 173,719,571,935.39
  5. Step 5: Solve for x
    x = 173,719,571,935.39/478,124.56
  6. Step 6: Final answer
    x = 363,335.39

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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.