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Finding the Fourth Proportional to 821,622.40, 1,232,606.40 and 466,345.60

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Solution

The fourth proportional to 821,622.40, 1,232,606.40 and 466,345.60 is: 699,616.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,622.40 : 1,232,606.40 = 466,345.60 : x
  2. Step 2: Convert to fraction form
    821,622.40/1,232,606.40 = 466,345.60/x
  3. Step 3: Cross multiply
    821,622.40x = 1,232,606.40 × 466,345.60
  4. Step 4: Simplify right side
    821,622.40x = 574,820,571,171.84
  5. Step 5: Solve for x
    x = 574,820,571,171.84/821,622.40
  6. Step 6: Final answer
    x = 699,616.48

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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.