Home / 527,090.65-789,808.07-407,440.78

Finding the Fourth Proportional to 527,090.65, 789,808.07 and 407,440.78

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Solution

The fourth proportional to 527,090.65, 789,808.07 and 407,440.78 is: 610,521.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,090.65 : 789,808.07 = 407,440.78 : x
  2. Step 2: Convert to fraction form
    527,090.65/789,808.07 = 407,440.78/x
  3. Step 3: Cross multiply
    527,090.65x = 789,808.07 × 407,440.78
  4. Step 4: Simplify right side
    527,090.65x = 321,800,015,135.18
  5. Step 5: Solve for x
    x = 321,800,015,135.18/527,090.65
  6. Step 6: Final answer
    x = 610,521.20

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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.