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Finding the Fourth Proportional to 680,708.46, 939,668.42 and 484,601.54

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Solution

The fourth proportional to 680,708.46, 939,668.42 and 484,601.54 is: 668,957.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,708.46 : 939,668.42 = 484,601.54 : x
  2. Step 2: Convert to fraction form
    680,708.46/939,668.42 = 484,601.54/x
  3. Step 3: Cross multiply
    680,708.46x = 939,668.42 × 484,601.54
  4. Step 4: Simplify right side
    680,708.46x = 455,364,763,421.37
  5. Step 5: Solve for x
    x = 455,364,763,421.37/680,708.46
  6. Step 6: Final answer
    x = 668,957.11

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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.