Home / 821,687.40-1,234,604.70-522,311.40

Finding the Fourth Proportional to 821,687.40, 1,234,604.70 and 522,311.40

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Solution

The fourth proportional to 821,687.40, 1,234,604.70 and 522,311.40 is: 784,785.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,687.40 : 1,234,604.70 = 522,311.40 : x
  2. Step 2: Convert to fraction form
    821,687.40/1,234,604.70 = 522,311.40/x
  3. Step 3: Cross multiply
    821,687.40x = 1,234,604.70 × 522,311.40
  4. Step 4: Simplify right side
    821,687.40x = 644,848,109,303.58
  5. Step 5: Solve for x
    x = 644,848,109,303.58/821,687.40
  6. Step 6: Final answer
    x = 784,785.20

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1.5x scale

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.