Home / 643,038.90-964,361.34-444,634.26

Finding the Fourth Proportional to 643,038.90, 964,361.34 and 444,634.26

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Solution

The fourth proportional to 643,038.90, 964,361.34 and 444,634.26 is: 666,815.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,038.90 : 964,361.34 = 444,634.26 : x
  2. Step 2: Convert to fraction form
    643,038.90/964,361.34 = 444,634.26/x
  3. Step 3: Cross multiply
    643,038.90x = 964,361.34 × 444,634.26
  4. Step 4: Simplify right side
    643,038.90x = 428,788,090,783.51
  5. Step 5: Solve for x
    x = 428,788,090,783.51/643,038.90
  6. Step 6: Final answer
    x = 666,815.17

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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.