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Finding the Fourth Proportional to 722,097.75, 996,501.68 and 399,814.76

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Solution

The fourth proportional to 722,097.75, 996,501.68 and 399,814.76 is: 551,748.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,097.75 : 996,501.68 = 399,814.76 : x
  2. Step 2: Convert to fraction form
    722,097.75/996,501.68 = 399,814.76/x
  3. Step 3: Cross multiply
    722,097.75x = 996,501.68 × 399,814.76
  4. Step 4: Simplify right side
    722,097.75x = 398,416,073,047.22
  5. Step 5: Solve for x
    x = 398,416,073,047.22/722,097.75
  6. Step 6: Final answer
    x = 551,748.12

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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.