Home / 821,822.40-1,234,807.20-522,446.40

Finding the Fourth Proportional to 821,822.40, 1,234,807.20 and 522,446.40

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Solution

The fourth proportional to 821,822.40, 1,234,807.20 and 522,446.40 is: 784,987.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,822.40 : 1,234,807.20 = 522,446.40 : x
  2. Step 2: Convert to fraction form
    821,822.40/1,234,807.20 = 522,446.40/x
  3. Step 3: Cross multiply
    821,822.40x = 1,234,807.20 × 522,446.40
  4. Step 4: Simplify right side
    821,822.40x = 645,120,576,334.08
  5. Step 5: Solve for x
    x = 645,120,576,334.08/821,822.40
  6. Step 6: Final answer
    x = 784,987.82

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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.