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Finding the Fourth Proportional to 822,199.72, 1,232,398.77 and 422,861.62

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Solution

The fourth proportional to 822,199.72, 1,232,398.77 and 422,861.62 is: 633,829.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,199.72 : 1,232,398.77 = 422,861.62 : x
  2. Step 2: Convert to fraction form
    822,199.72/1,232,398.77 = 422,861.62/x
  3. Step 3: Cross multiply
    822,199.72x = 1,232,398.77 × 422,861.62
  4. Step 4: Simplify right side
    822,199.72x = 521,134,140,368.21
  5. Step 5: Solve for x
    x = 521,134,140,368.21/822,199.72
  6. Step 6: Final answer
    x = 633,829.14

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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.