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Finding the Fourth Proportional to 430,520.80, 645,704.40 and 272,466.40

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Solution

The fourth proportional to 430,520.80, 645,704.40 and 272,466.40 is: 408,651.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,520.80 : 645,704.40 = 272,466.40 : x
  2. Step 2: Convert to fraction form
    430,520.80/645,704.40 = 272,466.40/x
  3. Step 3: Cross multiply
    430,520.80x = 645,704.40 × 272,466.40
  4. Step 4: Simplify right side
    430,520.80x = 175,932,753,332.16
  5. Step 5: Solve for x
    x = 175,932,753,332.16/430,520.80
  6. Step 6: Final answer
    x = 408,651.00

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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.