Home / 672,464,007.20-1,008,696,010.80-328,090,239.20

Finding the Fourth Proportional to 672,464,007.20, 1,008,696,010.80 and 328,090,239.20

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Solution

The fourth proportional to 672,464,007.20, 1,008,696,010.80 and 328,090,239.20 is: 492,135,358.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,464,007.20 : 1,008,696,010.80 = 328,090,239.20 : x
  2. Step 2: Convert to fraction form
    672,464,007.20/1,008,696,010.80 = 328,090,239.20/x
  3. Step 3: Cross multiply
    672,464,007.20x = 1,008,696,010.80 × 328,090,239.20
  4. Step 4: Simplify right side
    672,464,007.20x = 330,943,315,463,457,728
  5. Step 5: Solve for x
    x = 330,943,315,463,457,728/672,464,007.20
  6. Step 6: Final answer
    x = 492,135,358.80

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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.