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Finding the Fourth Proportional to 660,164.28, 988,961.55 and 486,740.16

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Solution

The fourth proportional to 660,164.28, 988,961.55 and 486,740.16 is: 729,162.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,164.28 : 988,961.55 = 486,740.16 : x
  2. Step 2: Convert to fraction form
    660,164.28/988,961.55 = 486,740.16/x
  3. Step 3: Cross multiply
    660,164.28x = 988,961.55 × 486,740.16
  4. Step 4: Simplify right side
    660,164.28x = 481,367,303,080.85
  5. Step 5: Solve for x
    x = 481,367,303,080.85/660,164.28
  6. Step 6: Final answer
    x = 729,162.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.