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Finding the Fourth Proportional to 540,830.20, 809,690.10 and 330,878.20

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Solution

The fourth proportional to 540,830.20, 809,690.10 and 330,878.20 is: 495,365.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,830.20 : 809,690.10 = 330,878.20 : x
  2. Step 2: Convert to fraction form
    540,830.20/809,690.10 = 330,878.20/x
  3. Step 3: Cross multiply
    540,830.20x = 809,690.10 × 330,878.20
  4. Step 4: Simplify right side
    540,830.20x = 267,908,802,845.82
  5. Step 5: Solve for x
    x = 267,908,802,845.82/540,830.20
  6. Step 6: Final answer
    x = 495,365.83

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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.