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Finding the Fourth Proportional to 552,885.67, 762,899.93 and 311,153.83

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Solution

The fourth proportional to 552,885.67, 762,899.93 and 311,153.83 is: 429,345.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,885.67 : 762,899.93 = 311,153.83 : x
  2. Step 2: Convert to fraction form
    552,885.67/762,899.93 = 311,153.83/x
  3. Step 3: Cross multiply
    552,885.67x = 762,899.93 × 311,153.83
  4. Step 4: Simplify right side
    552,885.67x = 237,379,234,580.28
  5. Step 5: Solve for x
    x = 237,379,234,580.28/552,885.67
  6. Step 6: Final answer
    x = 429,345.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.