Home / 726,911.80-1,089,935.70-446,630.20

Finding the Fourth Proportional to 726,911.80, 1,089,935.70 and 446,630.20

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Solution

The fourth proportional to 726,911.80, 1,089,935.70 and 446,630.20 is: 669,679.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,911.80 : 1,089,935.70 = 446,630.20 : x
  2. Step 2: Convert to fraction form
    726,911.80/1,089,935.70 = 446,630.20/x
  3. Step 3: Cross multiply
    726,911.80x = 1,089,935.70 × 446,630.20
  4. Step 4: Simplify right side
    726,911.80x = 486,798,199,678.14
  5. Step 5: Solve for x
    x = 486,798,199,678.14/726,911.80
  6. Step 6: Final answer
    x = 669,679.87

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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.