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Finding the Fourth Proportional to 636,670.50, 878,730.11 and 364,920.57

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Solution

The fourth proportional to 636,670.50, 878,730.11 and 364,920.57 is: 503,661.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,670.50 : 878,730.11 = 364,920.57 : x
  2. Step 2: Convert to fraction form
    636,670.50/878,730.11 = 364,920.57/x
  3. Step 3: Cross multiply
    636,670.50x = 878,730.11 × 364,920.57
  4. Step 4: Simplify right side
    636,670.50x = 320,666,690,792.76
  5. Step 5: Solve for x
    x = 320,666,690,792.76/636,670.50
  6. Step 6: Final answer
    x = 503,661.93

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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.