Home / 687,069.15-1,030,120.83-302,635.56

Finding the Fourth Proportional to 687,069.15, 1,030,120.83 and 302,635.56

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Solution

The fourth proportional to 687,069.15, 1,030,120.83 and 302,635.56 is: 453,740.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,069.15 : 1,030,120.83 = 302,635.56 : x
  2. Step 2: Convert to fraction form
    687,069.15/1,030,120.83 = 302,635.56/x
  3. Step 3: Cross multiply
    687,069.15x = 1,030,120.83 × 302,635.56
  4. Step 4: Simplify right side
    687,069.15x = 311,751,194,254.72
  5. Step 5: Solve for x
    x = 311,751,194,254.72/687,069.15
  6. Step 6: Final answer
    x = 453,740.64

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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.