Home / 442,940,999.80-664,411,499.70-339,628,869.40

Finding the Fourth Proportional to 442,940,999.80, 664,411,499.70 and 339,628,869.40

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Solution

The fourth proportional to 442,940,999.80, 664,411,499.70 and 339,628,869.40 is: 509,443,304.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,940,999.80 : 664,411,499.70 = 339,628,869.40 : x
  2. Step 2: Convert to fraction form
    442,940,999.80/664,411,499.70 = 339,628,869.40/x
  3. Step 3: Cross multiply
    442,940,999.80x = 664,411,499.70 × 339,628,869.40
  4. Step 4: Simplify right side
    442,940,999.80x = 225,653,326,459,469,440
  5. Step 5: Solve for x
    x = 225,653,326,459,469,440/442,940,999.80
  6. Step 6: Final answer
    x = 509,443,304.10

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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.