Home / 724,311.27-999,502.61-402,021.45

Finding the Fourth Proportional to 724,311.27, 999,502.61 and 402,021.45

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Solution

The fourth proportional to 724,311.27, 999,502.61 and 402,021.45 is: 554,763.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,311.27 : 999,502.61 = 402,021.45 : x
  2. Step 2: Convert to fraction form
    724,311.27/999,502.61 = 402,021.45/x
  3. Step 3: Cross multiply
    724,311.27x = 999,502.61 × 402,021.45
  4. Step 4: Simplify right side
    724,311.27x = 401,821,486,540.88
  5. Step 5: Solve for x
    x = 401,821,486,540.88/724,311.27
  6. Step 6: Final answer
    x = 554,763.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.