Home / 917,619.20-1,375,116.60-636,808.40

Finding the Fourth Proportional to 917,619.20, 1,375,116.60 and 636,808.40

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Solution

The fourth proportional to 917,619.20, 1,375,116.60 and 636,808.40 is: 954,301.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,619.20 : 1,375,116.60 = 636,808.40 : x
  2. Step 2: Convert to fraction form
    917,619.20/1,375,116.60 = 636,808.40/x
  3. Step 3: Cross multiply
    917,619.20x = 1,375,116.60 × 636,808.40
  4. Step 4: Simplify right side
    917,619.20x = 875,685,801,859.44
  5. Step 5: Solve for x
    x = 875,685,801,859.44/917,619.20
  6. Step 6: Final answer
    x = 954,301.96

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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.