Home / 911,127.96-1,257,144.30-528,927.84

Finding the Fourth Proportional to 911,127.96, 1,257,144.30 and 528,927.84

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Solution

The fourth proportional to 911,127.96, 1,257,144.30 and 528,927.84 is: 729,797.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,127.96 : 1,257,144.30 = 528,927.84 : x
  2. Step 2: Convert to fraction form
    911,127.96/1,257,144.30 = 528,927.84/x
  3. Step 3: Cross multiply
    911,127.96x = 1,257,144.30 × 528,927.84
  4. Step 4: Simplify right side
    911,127.96x = 664,938,619,167.31
  5. Step 5: Solve for x
    x = 664,938,619,167.31/911,127.96
  6. Step 6: Final answer
    x = 729,797.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.