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Finding the Fourth Proportional to 660,668.70, 990,847.97 and 372,604.93

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Solution

The fourth proportional to 660,668.70, 990,847.97 and 372,604.93 is: 558,819.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,668.70 : 990,847.97 = 372,604.93 : x
  2. Step 2: Convert to fraction form
    660,668.70/990,847.97 = 372,604.93/x
  3. Step 3: Cross multiply
    660,668.70x = 990,847.97 × 372,604.93
  4. Step 4: Simplify right side
    660,668.70x = 369,194,837,655.52
  5. Step 5: Solve for x
    x = 369,194,837,655.52/660,668.70
  6. Step 6: Final answer
    x = 558,819.93

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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.