Home / 912,438.87-1,258,660.58-530,423.43

Finding the Fourth Proportional to 912,438.87, 1,258,660.58 and 530,423.43

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Solution

The fourth proportional to 912,438.87, 1,258,660.58 and 530,423.43 is: 731,690.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,438.87 : 1,258,660.58 = 530,423.43 : x
  2. Step 2: Convert to fraction form
    912,438.87/1,258,660.58 = 530,423.43/x
  3. Step 3: Cross multiply
    912,438.87x = 1,258,660.58 × 530,423.43
  4. Step 4: Simplify right side
    912,438.87x = 667,623,062,049.39
  5. Step 5: Solve for x
    x = 667,623,062,049.39/912,438.87
  6. Step 6: Final answer
    x = 731,690.73

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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.