Home / 639,584.46-959,979.48-470,589.50

Finding the Fourth Proportional to 639,584.46, 959,979.48 and 470,589.50

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Solution

The fourth proportional to 639,584.46, 959,979.48 and 470,589.50 is: 706,327.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,584.46 : 959,979.48 = 470,589.50 : x
  2. Step 2: Convert to fraction form
    639,584.46/959,979.48 = 470,589.50/x
  3. Step 3: Cross multiply
    639,584.46x = 959,979.48 × 470,589.50
  4. Step 4: Simplify right side
    639,584.46x = 451,756,266,785.76
  5. Step 5: Solve for x
    x = 451,756,266,785.76/639,584.46
  6. Step 6: Final answer
    x = 706,327.77

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1.5x scale

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.