Home / 907,638.20-1,361,894.70-640,824.20

Finding the Fourth Proportional to 907,638.20, 1,361,894.70 and 640,824.20

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Solution

The fourth proportional to 907,638.20, 1,361,894.70 and 640,824.20 is: 961,545.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,638.20 : 1,361,894.70 = 640,824.20 : x
  2. Step 2: Convert to fraction form
    907,638.20/1,361,894.70 = 640,824.20/x
  3. Step 3: Cross multiply
    907,638.20x = 1,361,894.70 × 640,824.20
  4. Step 4: Simplify right side
    907,638.20x = 872,735,081,611.74
  5. Step 5: Solve for x
    x = 872,735,081,611.74/907,638.20
  6. Step 6: Final answer
    x = 961,545.12

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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.