Home / 403,335,514.80-605,003,272.20-399,509,139.60

Finding the Fourth Proportional to 403,335,514.80, 605,003,272.20 and 399,509,139.60

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Solution

The fourth proportional to 403,335,514.80, 605,003,272.20 and 399,509,139.60 is: 599,263,709.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,335,514.80 : 605,003,272.20 = 399,509,139.60 : x
  2. Step 2: Convert to fraction form
    403,335,514.80/605,003,272.20 = 399,509,139.60/x
  3. Step 3: Cross multiply
    403,335,514.80x = 605,003,272.20 × 399,509,139.60
  4. Step 4: Simplify right side
    403,335,514.80x = 241,704,336,731,806,624
  5. Step 5: Solve for x
    x = 241,704,336,731,806,624/403,335,514.80
  6. Step 6: Final answer
    x = 599,263,709.40

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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.