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Finding the Fourth Proportional to 448,319.80, 670,496.82 and 398,747.80

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Solution

The fourth proportional to 448,319.80, 670,496.82 and 398,747.80 is: 596,358.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,319.80 : 670,496.82 = 398,747.80 : x
  2. Step 2: Convert to fraction form
    448,319.80/670,496.82 = 398,747.80/x
  3. Step 3: Cross multiply
    448,319.80x = 670,496.82 × 398,747.80
  4. Step 4: Simplify right side
    448,319.80x = 267,359,131,882.00
  5. Step 5: Solve for x
    x = 267,359,131,882.00/448,319.80
  6. Step 6: Final answer
    x = 596,358.07

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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.