Home / 520,020.10-780,116.55-204,487.30

Finding the Fourth Proportional to 520,020.10, 780,116.55 and 204,487.30

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Solution

The fourth proportional to 520,020.10, 780,116.55 and 204,487.30 is: 306,764.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,020.10 : 780,116.55 = 204,487.30 : x
  2. Step 2: Convert to fraction form
    520,020.10/780,116.55 = 204,487.30/x
  3. Step 3: Cross multiply
    520,020.10x = 780,116.55 × 204,487.30
  4. Step 4: Simplify right side
    520,020.10x = 159,523,926,994.82
  5. Step 5: Solve for x
    x = 159,523,926,994.82/520,020.10
  6. Step 6: Final answer
    x = 306,764.93

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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.