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Finding the Fourth Proportional to 547,969.40, 821,435.70 and 323,502.20

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Solution

The fourth proportional to 547,969.40, 821,435.70 and 323,502.20 is: 484,947.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,969.40 : 821,435.70 = 323,502.20 : x
  2. Step 2: Convert to fraction form
    547,969.40/821,435.70 = 323,502.20/x
  3. Step 3: Cross multiply
    547,969.40x = 821,435.70 × 323,502.20
  4. Step 4: Simplify right side
    547,969.40x = 265,736,256,108.54
  5. Step 5: Solve for x
    x = 265,736,256,108.54/547,969.40
  6. Step 6: Final answer
    x = 484,947.25

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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.