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Finding the Fourth Proportional to 478,800.90, 660,749.85 and 263,948.70

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Solution

The fourth proportional to 478,800.90, 660,749.85 and 263,948.70 is: 364,251.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,800.90 : 660,749.85 = 263,948.70 : x
  2. Step 2: Convert to fraction form
    478,800.90/660,749.85 = 263,948.70/x
  3. Step 3: Cross multiply
    478,800.90x = 660,749.85 × 263,948.70
  4. Step 4: Simplify right side
    478,800.90x = 174,404,063,932.70
  5. Step 5: Solve for x
    x = 174,404,063,932.70/478,800.90
  6. Step 6: Final answer
    x = 364,251.75

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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.