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Finding the Fourth Proportional to 639,580.62, 959,973.72 and 470,585.67

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Solution

The fourth proportional to 639,580.62, 959,973.72 and 470,585.67 is: 706,322.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,580.62 : 959,973.72 = 470,585.67 : x
  2. Step 2: Convert to fraction form
    639,580.62/959,973.72 = 470,585.67/x
  3. Step 3: Cross multiply
    639,580.62x = 959,973.72 × 470,585.67
  4. Step 4: Simplify right side
    639,580.62x = 451,749,876,208.59
  5. Step 5: Solve for x
    x = 451,749,876,208.59/639,580.62
  6. Step 6: Final answer
    x = 706,322.02

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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.