Home / 891,314.28-1,229,615.64-528,753.42

Finding the Fourth Proportional to 891,314.28, 1,229,615.64 and 528,753.42

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Solution

The fourth proportional to 891,314.28, 1,229,615.64 and 528,753.42 is: 729,443.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,314.28 : 1,229,615.64 = 528,753.42 : x
  2. Step 2: Convert to fraction form
    891,314.28/1,229,615.64 = 528,753.42/x
  3. Step 3: Cross multiply
    891,314.28x = 1,229,615.64 × 528,753.42
  4. Step 4: Simplify right side
    891,314.28x = 650,163,474,935.49
  5. Step 5: Solve for x
    x = 650,163,474,935.49/891,314.28
  6. Step 6: Final answer
    x = 729,443.58

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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.