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Finding the Fourth Proportional to 478,817.80, 660,770.56 and 263,953.15

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Solution

The fourth proportional to 478,817.80, 660,770.56 and 263,953.15 is: 364,256.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,817.80 : 660,770.56 = 263,953.15 : x
  2. Step 2: Convert to fraction form
    478,817.80/660,770.56 = 263,953.15/x
  3. Step 3: Cross multiply
    478,817.80x = 660,770.56 × 263,953.15
  4. Step 4: Simplify right side
    478,817.80x = 174,412,469,417.28
  5. Step 5: Solve for x
    x = 174,412,469,417.28/478,817.80
  6. Step 6: Final answer
    x = 364,256.45

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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.