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Finding the Fourth Proportional to 700,605.24, 966,884.40 and 398,799.24

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Solution

The fourth proportional to 700,605.24, 966,884.40 and 398,799.24 is: 550,370.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,605.24 : 966,884.40 = 398,799.24 : x
  2. Step 2: Convert to fraction form
    700,605.24/966,884.40 = 398,799.24/x
  3. Step 3: Cross multiply
    700,605.24x = 966,884.40 × 398,799.24
  4. Step 4: Simplify right side
    700,605.24x = 385,592,763,887.86
  5. Step 5: Solve for x
    x = 385,592,763,887.86/700,605.24
  6. Step 6: Final answer
    x = 550,370.94

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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.