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Finding the Fourth Proportional to 680,739.58, 939,711.36 and 484,632.64

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Solution

The fourth proportional to 680,739.58, 939,711.36 and 484,632.64 is: 669,000.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,739.58 : 939,711.36 = 484,632.64 : x
  2. Step 2: Convert to fraction form
    680,739.58/939,711.36 = 484,632.64/x
  3. Step 3: Cross multiply
    680,739.58x = 939,711.36 × 484,632.64
  4. Step 4: Simplify right side
    680,739.58x = 455,414,797,234.79
  5. Step 5: Solve for x
    x = 455,414,797,234.79/680,739.58
  6. Step 6: Final answer
    x = 669,000.03

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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.