Home / 945,830.20-1,305,234.78-516,117.40

Finding the Fourth Proportional to 945,830.20, 1,305,234.78 and 516,117.40

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Solution

The fourth proportional to 945,830.20, 1,305,234.78 and 516,117.40 is: 712,236.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,830.20 : 1,305,234.78 = 516,117.40 : x
  2. Step 2: Convert to fraction form
    945,830.20/1,305,234.78 = 516,117.40/x
  3. Step 3: Cross multiply
    945,830.20x = 1,305,234.78 × 516,117.40
  4. Step 4: Simplify right side
    945,830.20x = 673,654,381,043.17
  5. Step 5: Solve for x
    x = 673,654,381,043.17/945,830.20
  6. Step 6: Final answer
    x = 712,236.07

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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.