Home / 399,544,499.20-598,308,979.20-318,922,931.20

Finding the Fourth Proportional to 399,544,499.20, 598,308,979.20 and 318,922,931.20

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Solution

The fourth proportional to 399,544,499.20, 598,308,979.20 and 318,922,931.20 is: 477,579,978.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,544,499.20 : 598,308,979.20 = 318,922,931.20 : x
  2. Step 2: Convert to fraction form
    399,544,499.20/598,308,979.20 = 318,922,931.20/x
  3. Step 3: Cross multiply
    399,544,499.20x = 598,308,979.20 × 318,922,931.20
  4. Step 4: Simplify right side
    399,544,499.20x = 190,814,453,409,743,840
  5. Step 5: Solve for x
    x = 190,814,453,409,743,840/399,544,499.20
  6. Step 6: Final answer
    x = 477,579,978.68

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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.