Home / 976,638.80-1,464,083.40-639,840.80

Finding the Fourth Proportional to 976,638.80, 1,464,083.40 and 639,840.80

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Solution

The fourth proportional to 976,638.80, 1,464,083.40 and 639,840.80 is: 959,188.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    976,638.80 : 1,464,083.40 = 639,840.80 : x
  2. Step 2: Convert to fraction form
    976,638.80/1,464,083.40 = 639,840.80/x
  3. Step 3: Cross multiply
    976,638.80x = 1,464,083.40 × 639,840.80
  4. Step 4: Simplify right side
    976,638.80x = 936,780,293,922.72
  5. Step 5: Solve for x
    x = 936,780,293,922.72/976,638.80
  6. Step 6: Final answer
    x = 959,188.08

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1.5x scale

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.