Home / 696,631,590.64-961,135,165.20-395,167,217.86

Finding the Fourth Proportional to 696,631,590.64, 961,135,165.20 and 395,167,217.86

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Solution

The fourth proportional to 696,631,590.64, 961,135,165.20 and 395,167,217.86 is: 545,207,989.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,631,590.64 : 961,135,165.20 = 395,167,217.86 : x
  2. Step 2: Convert to fraction form
    696,631,590.64/961,135,165.20 = 395,167,217.86/x
  3. Step 3: Cross multiply
    696,631,590.64x = 961,135,165.20 × 395,167,217.86
  4. Step 4: Simplify right side
    696,631,590.64x = 379,809,109,219,495,552
  5. Step 5: Solve for x
    x = 379,809,109,219,495,552/696,631,590.64
  6. Step 6: Final answer
    x = 545,207,989.88

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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.