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Finding the Fourth Proportional to 478,635.77, 660,531.20 and 263,789.67

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Solution

The fourth proportional to 478,635.77, 660,531.20 and 263,789.67 is: 364,037.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,635.77 : 660,531.20 = 263,789.67 : x
  2. Step 2: Convert to fraction form
    478,635.77/660,531.20 = 263,789.67/x
  3. Step 3: Cross multiply
    478,635.77x = 660,531.20 × 263,789.67
  4. Step 4: Simplify right side
    478,635.77x = 174,241,307,272.70
  5. Step 5: Solve for x
    x = 174,241,307,272.70/478,635.77
  6. Step 6: Final answer
    x = 364,037.37

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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.