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Finding the Fourth Proportional to 715,744.14, 1,072,729.86 and 360,564.40

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Solution

The fourth proportional to 715,744.14, 1,072,729.86 and 360,564.40 is: 540,400.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,744.14 : 1,072,729.86 = 360,564.40 : x
  2. Step 2: Convert to fraction form
    715,744.14/1,072,729.86 = 360,564.40/x
  3. Step 3: Cross multiply
    715,744.14x = 1,072,729.86 × 360,564.40
  4. Step 4: Simplify right side
    715,744.14x = 386,788,198,332.98
  5. Step 5: Solve for x
    x = 386,788,198,332.98/715,744.14
  6. Step 6: Final answer
    x = 540,400.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.