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Finding the Fourth Proportional to 478,850.67, 660,811.55 and 263,990.07

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Solution

The fourth proportional to 478,850.67, 660,811.55 and 263,990.07 is: 364,304.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,850.67 : 660,811.55 = 263,990.07 : x
  2. Step 2: Convert to fraction form
    478,850.67/660,811.55 = 263,990.07/x
  3. Step 3: Cross multiply
    478,850.67x = 660,811.55 × 263,990.07
  4. Step 4: Simplify right side
    478,850.67x = 174,447,686,021.36
  5. Step 5: Solve for x
    x = 174,447,686,021.36/478,850.67
  6. Step 6: Final answer
    x = 364,304.98

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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.