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Finding the Fourth Proportional to 488,859.70, 636,217.45 and 488,859.70

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Solution

The fourth proportional to 488,859.70, 636,217.45 and 488,859.70 is: 636,217.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,859.70 : 636,217.45 = 488,859.70 : x
  2. Step 2: Convert to fraction form
    488,859.70/636,217.45 = 488,859.70/x
  3. Step 3: Cross multiply
    488,859.70x = 636,217.45 × 488,859.70
  4. Step 4: Simplify right side
    488,859.70x = 311,021,071,741.77
  5. Step 5: Solve for x
    x = 311,021,071,741.77/488,859.70
  6. Step 6: Final answer
    x = 636,217.45

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.