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Finding the Fourth Proportional to 540,840.20, 809,705.10 and 330,888.20

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Solution

The fourth proportional to 540,840.20, 809,705.10 and 330,888.20 is: 495,380.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,840.20 : 809,705.10 = 330,888.20 : x
  2. Step 2: Convert to fraction form
    540,840.20/809,705.10 = 330,888.20/x
  3. Step 3: Cross multiply
    540,840.20x = 809,705.10 × 330,888.20
  4. Step 4: Simplify right side
    540,840.20x = 267,921,863,069.82
  5. Step 5: Solve for x
    x = 267,921,863,069.82/540,840.20
  6. Step 6: Final answer
    x = 495,380.82

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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.