Home / 520,846,841.49-718,441,699.41-309,003,690.63

Finding the Fourth Proportional to 520,846,841.49, 718,441,699.41 and 309,003,690.63

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Solution

The fourth proportional to 520,846,841.49, 718,441,699.41 and 309,003,690.63 is: 426,231,127.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,846,841.49 : 718,441,699.41 = 309,003,690.63 : x
  2. Step 2: Convert to fraction form
    520,846,841.49/718,441,699.41 = 309,003,690.63/x
  3. Step 3: Cross multiply
    520,846,841.49x = 718,441,699.41 × 309,003,690.63
  4. Step 4: Simplify right side
    520,846,841.49x = 222,001,136,620,179,072
  5. Step 5: Solve for x
    x = 222,001,136,620,179,072/520,846,841.49
  6. Step 6: Final answer
    x = 426,231,127.72

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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.