Home / 976,636.80-1,464,080.40-639,838.80

Finding the Fourth Proportional to 976,636.80, 1,464,080.40 and 639,838.80

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Solution

The fourth proportional to 976,636.80, 1,464,080.40 and 639,838.80 is: 959,185.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    976,636.80 : 1,464,080.40 = 639,838.80 : x
  2. Step 2: Convert to fraction form
    976,636.80/1,464,080.40 = 639,838.80/x
  3. Step 3: Cross multiply
    976,636.80x = 1,464,080.40 × 639,838.80
  4. Step 4: Simplify right side
    976,636.80x = 936,775,446,239.52
  5. Step 5: Solve for x
    x = 936,775,446,239.52/976,636.80
  6. Step 6: Final answer
    x = 959,185.08

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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.