Home / 687,364.53-1,030,742.33-367,438.90

Finding the Fourth Proportional to 687,364.53, 1,030,742.33 and 367,438.90

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Solution

The fourth proportional to 687,364.53, 1,030,742.33 and 367,438.90 is: 550,995.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,364.53 : 1,030,742.33 = 367,438.90 : x
  2. Step 2: Convert to fraction form
    687,364.53/1,030,742.33 = 367,438.90/x
  3. Step 3: Cross multiply
    687,364.53x = 1,030,742.33 × 367,438.90
  4. Step 4: Simplify right side
    687,364.53x = 378,734,821,605.51
  5. Step 5: Solve for x
    x = 378,734,821,605.51/687,364.53
  6. Step 6: Final answer
    x = 550,995.58

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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.