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Finding the Fourth Proportional to 722,095.45, 996,522.86 and 399,805.54

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Solution

The fourth proportional to 722,095.45, 996,522.86 and 399,805.54 is: 551,748.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,095.45 : 996,522.86 = 399,805.54 : x
  2. Step 2: Convert to fraction form
    722,095.45/996,522.86 = 399,805.54/x
  3. Step 3: Cross multiply
    722,095.45x = 996,522.86 × 399,805.54
  4. Step 4: Simplify right side
    722,095.45x = 398,415,358,672.85
  5. Step 5: Solve for x
    x = 398,415,358,672.85/722,095.45
  6. Step 6: Final answer
    x = 551,748.89

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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.