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Finding the Fourth Proportional to 478,609.14, 660,484.98 and 263,756.88

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Solution

The fourth proportional to 478,609.14, 660,484.98 and 263,756.88 is: 363,986.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,609.14 : 660,484.98 = 263,756.88 : x
  2. Step 2: Convert to fraction form
    478,609.14/660,484.98 = 263,756.88/x
  3. Step 3: Cross multiply
    478,609.14x = 660,484.98 × 263,756.88
  4. Step 4: Simplify right side
    478,609.14x = 174,207,457,611.66
  5. Step 5: Solve for x
    x = 174,207,457,611.66/478,609.14
  6. Step 6: Final answer
    x = 363,986.90

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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.