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Finding the Fourth Proportional to 520,563.46, 718,099.77 and 316,676.74

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Solution

The fourth proportional to 520,563.46, 718,099.77 and 316,676.74 is: 436,844.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,563.46 : 718,099.77 = 316,676.74 : x
  2. Step 2: Convert to fraction form
    520,563.46/718,099.77 = 316,676.74/x
  3. Step 3: Cross multiply
    520,563.46x = 718,099.77 × 316,676.74
  4. Step 4: Simplify right side
    520,563.46x = 227,405,494,158.35
  5. Step 5: Solve for x
    x = 227,405,494,158.35/520,563.46
  6. Step 6: Final answer
    x = 436,844.90

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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.