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Finding the Fourth Proportional to 543,322.20, 814,983.30 and 318,790.20

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Solution

The fourth proportional to 543,322.20, 814,983.30 and 318,790.20 is: 478,185.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,322.20 : 814,983.30 = 318,790.20 : x
  2. Step 2: Convert to fraction form
    543,322.20/814,983.30 = 318,790.20/x
  3. Step 3: Cross multiply
    543,322.20x = 814,983.30 × 318,790.20
  4. Step 4: Simplify right side
    543,322.20x = 259,808,689,203.66
  5. Step 5: Solve for x
    x = 259,808,689,203.66/543,322.20
  6. Step 6: Final answer
    x = 478,185.30

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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.