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Finding the Fourth Proportional to 721,958.40, 996,407.69 and 415,975.69

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Solution

The fourth proportional to 721,958.40, 996,407.69 and 415,975.69 is: 574,107.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,958.40 : 996,407.69 = 415,975.69 : x
  2. Step 2: Convert to fraction form
    721,958.40/996,407.69 = 415,975.69/x
  3. Step 3: Cross multiply
    721,958.40x = 996,407.69 × 415,975.69
  4. Step 4: Simplify right side
    721,958.40x = 414,481,376,369.06
  5. Step 5: Solve for x
    x = 414,481,376,369.06/721,958.40
  6. Step 6: Final answer
    x = 574,107.01

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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.