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Finding the Fourth Proportional to 440,000.10, 660,984.30 and 422,066.70

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Solution

The fourth proportional to 440,000.10, 660,984.30 and 422,066.70 is: 634,044.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,000.10 : 660,984.30 = 422,066.70 : x
  2. Step 2: Convert to fraction form
    440,000.10/660,984.30 = 422,066.70/x
  3. Step 3: Cross multiply
    440,000.10x = 660,984.30 × 422,066.70
  4. Step 4: Simplify right side
    440,000.10x = 278,979,462,252.81
  5. Step 5: Solve for x
    x = 278,979,462,252.81/440,000.10
  6. Step 6: Final answer
    x = 634,044.09

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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.