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Finding the Fourth Proportional to 526,780.76, 789,482.21 and 211,459.10

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Solution

The fourth proportional to 526,780.76, 789,482.21 and 211,459.10 is: 316,912.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,780.76 : 789,482.21 = 211,459.10 : x
  2. Step 2: Convert to fraction form
    526,780.76/789,482.21 = 211,459.10/x
  3. Step 3: Cross multiply
    526,780.76x = 789,482.21 × 211,459.10
  4. Step 4: Simplify right side
    526,780.76x = 166,943,192,587.90
  5. Step 5: Solve for x
    x = 166,943,192,587.90/526,780.76
  6. Step 6: Final answer
    x = 316,912.09

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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.