Home / 687,059.70-1,030,589.55-509,912.70

Finding the Fourth Proportional to 687,059.70, 1,030,589.55 and 509,912.70

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Solution

The fourth proportional to 687,059.70, 1,030,589.55 and 509,912.70 is: 764,869.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,059.70 : 1,030,589.55 = 509,912.70 : x
  2. Step 2: Convert to fraction form
    687,059.70/1,030,589.55 = 509,912.70/x
  3. Step 3: Cross multiply
    687,059.70x = 1,030,589.55 × 509,912.70
  4. Step 4: Simplify right side
    687,059.70x = 525,510,700,032.29
  5. Step 5: Solve for x
    x = 525,510,700,032.29/687,059.70
  6. Step 6: Final answer
    x = 764,869.05

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Similar ratio
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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.