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Finding the Fourth Proportional to 519,980.56, 779,872.20 and 253,473.04

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Solution

The fourth proportional to 519,980.56, 779,872.20 and 253,473.04 is: 380,161.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,980.56 : 779,872.20 = 253,473.04 : x
  2. Step 2: Convert to fraction form
    519,980.56/779,872.20 = 253,473.04/x
  3. Step 3: Cross multiply
    519,980.56x = 779,872.20 × 253,473.04
  4. Step 4: Simplify right side
    519,980.56x = 197,676,577,345.49
  5. Step 5: Solve for x
    x = 197,676,577,345.49/519,980.56
  6. Step 6: Final answer
    x = 380,161.48

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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.