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Finding the Fourth Proportional to 636,483.18, 878,345.53 and 364,639.08

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Solution

The fourth proportional to 636,483.18, 878,345.53 and 364,639.08 is: 503,201.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,483.18 : 878,345.53 = 364,639.08 : x
  2. Step 2: Convert to fraction form
    636,483.18/878,345.53 = 364,639.08/x
  3. Step 3: Cross multiply
    636,483.18x = 878,345.53 × 364,639.08
  4. Step 4: Simplify right side
    636,483.18x = 320,279,105,981.31
  5. Step 5: Solve for x
    x = 320,279,105,981.31/636,483.18
  6. Step 6: Final answer
    x = 503,201.21

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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.