Home / 509,787.12-764,773.02-210,100.89

Finding the Fourth Proportional to 509,787.12, 764,773.02 and 210,100.89

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Solution

The fourth proportional to 509,787.12, 764,773.02 and 210,100.89 is: 315,189.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,787.12 : 764,773.02 = 210,100.89 : x
  2. Step 2: Convert to fraction form
    509,787.12/764,773.02 = 210,100.89/x
  3. Step 3: Cross multiply
    509,787.12x = 764,773.02 × 210,100.89
  4. Step 4: Simplify right side
    509,787.12x = 160,679,492,149.99
  5. Step 5: Solve for x
    x = 160,679,492,149.99/509,787.12
  6. Step 6: Final answer
    x = 315,189.39

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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.