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Finding the Fourth Proportional to 486,686.55, 670,678.97 and 350,463.33

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Solution

The fourth proportional to 486,686.55, 670,678.97 and 350,463.33 is: 482,956.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,686.55 : 670,678.97 = 350,463.33 : x
  2. Step 2: Convert to fraction form
    486,686.55/670,678.97 = 350,463.33/x
  3. Step 3: Cross multiply
    486,686.55x = 670,678.97 × 350,463.33
  4. Step 4: Simplify right side
    486,686.55x = 235,048,388,771.01
  5. Step 5: Solve for x
    x = 235,048,388,771.01/486,686.55
  6. Step 6: Final answer
    x = 482,956.41

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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.