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Finding the Fourth Proportional to 631,708.12, 948,218.46 and 365,987.80

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Solution

The fourth proportional to 631,708.12, 948,218.46 and 365,987.80 is: 549,361.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,708.12 : 948,218.46 = 365,987.80 : x
  2. Step 2: Convert to fraction form
    631,708.12/948,218.46 = 365,987.80/x
  3. Step 3: Cross multiply
    631,708.12x = 948,218.46 × 365,987.80
  4. Step 4: Simplify right side
    631,708.12x = 347,036,388,094.79
  5. Step 5: Solve for x
    x = 347,036,388,094.79/631,708.12
  6. Step 6: Final answer
    x = 549,361.92

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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.