Home / 687,063.80-1,030,112.78-302,630.20

Finding the Fourth Proportional to 687,063.80, 1,030,112.78 and 302,630.20

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Solution

The fourth proportional to 687,063.80, 1,030,112.78 and 302,630.20 is: 453,732.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,063.80 : 1,030,112.78 = 302,630.20 : x
  2. Step 2: Convert to fraction form
    687,063.80/1,030,112.78 = 302,630.20/x
  3. Step 3: Cross multiply
    687,063.80x = 1,030,112.78 × 302,630.20
  4. Step 4: Simplify right side
    687,063.80x = 311,743,236,633.96
  5. Step 5: Solve for x
    x = 311,743,236,633.96/687,063.80
  6. Step 6: Final answer
    x = 453,732.59

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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.