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Finding the Fourth Proportional to 520,029.09, 717,861.11 and 316,145.12

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Solution

The fourth proportional to 520,029.09, 717,861.11 and 316,145.12 is: 436,414.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,029.09 : 717,861.11 = 316,145.12 : x
  2. Step 2: Convert to fraction form
    520,029.09/717,861.11 = 316,145.12/x
  3. Step 3: Cross multiply
    520,029.09x = 717,861.11 × 316,145.12
  4. Step 4: Simplify right side
    520,029.09x = 226,948,285,995.95
  5. Step 5: Solve for x
    x = 226,948,285,995.95/520,029.09
  6. Step 6: Final answer
    x = 436,414.60

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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.