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Finding the Fourth Proportional to 540,304.88, 809,732.88 and 420,506.49

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Solution

The fourth proportional to 540,304.88, 809,732.88 and 420,506.49 is: 630,195.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,304.88 : 809,732.88 = 420,506.49 : x
  2. Step 2: Convert to fraction form
    540,304.88/809,732.88 = 420,506.49/x
  3. Step 3: Cross multiply
    540,304.88x = 809,732.88 × 420,506.49
  4. Step 4: Simplify right side
    540,304.88x = 340,497,931,206.39
  5. Step 5: Solve for x
    x = 340,497,931,206.39/540,304.88
  6. Step 6: Final answer
    x = 630,195.92

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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.