Home / 1,026,669.60-1,539,172.80-428,079.60

Finding the Fourth Proportional to 1,026,669.60, 1,539,172.80 and 428,079.60

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Solution

The fourth proportional to 1,026,669.60, 1,539,172.80 and 428,079.60 is: 641,772.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,026,669.60 : 1,539,172.80 = 428,079.60 : x
  2. Step 2: Convert to fraction form
    1,026,669.60/1,539,172.80 = 428,079.60/x
  3. Step 3: Cross multiply
    1,026,669.60x = 1,539,172.80 × 428,079.60
  4. Step 4: Simplify right side
    1,026,669.60x = 658,888,476,554.88
  5. Step 5: Solve for x
    x = 658,888,476,554.88/1,026,669.60
  6. Step 6: Final answer
    x = 641,772.66

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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.