Home / 722,158.70-996,609.07-399,868.79

Finding the Fourth Proportional to 722,158.70, 996,609.07 and 399,868.79

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Solution

The fourth proportional to 722,158.70, 996,609.07 and 399,868.79 is: 551,835.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,158.70 : 996,609.07 = 399,868.79 : x
  2. Step 2: Convert to fraction form
    722,158.70/996,609.07 = 399,868.79/x
  3. Step 3: Cross multiply
    722,158.70x = 996,609.07 × 399,868.79
  4. Step 4: Simplify right side
    722,158.70x = 398,512,860,395.90
  5. Step 5: Solve for x
    x = 398,512,860,395.90/722,158.70
  6. Step 6: Final answer
    x = 551,835.57

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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.