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Finding the Fourth Proportional to 547,029.64, 754,305.78 and 355,688.20

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Solution

The fourth proportional to 547,029.64, 754,305.78 and 355,688.20 is: 490,462.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,029.64 : 754,305.78 = 355,688.20 : x
  2. Step 2: Convert to fraction form
    547,029.64/754,305.78 = 355,688.20/x
  3. Step 3: Cross multiply
    547,029.64x = 754,305.78 × 355,688.20
  4. Step 4: Simplify right side
    547,029.64x = 268,297,665,137.80
  5. Step 5: Solve for x
    x = 268,297,665,137.80/547,029.64
  6. Step 6: Final answer
    x = 490,462.76

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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.