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Finding the Fourth Proportional to 636,792.64, 878,739.18 and 350,266.48

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Solution

The fourth proportional to 636,792.64, 878,739.18 and 350,266.48 is: 483,348.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,792.64 : 878,739.18 = 350,266.48 : x
  2. Step 2: Convert to fraction form
    636,792.64/878,739.18 = 350,266.48/x
  3. Step 3: Cross multiply
    636,792.64x = 878,739.18 × 350,266.48
  4. Step 4: Simplify right side
    636,792.64x = 307,792,879,416.69
  5. Step 5: Solve for x
    x = 307,792,879,416.69/636,792.64
  6. Step 6: Final answer
    x = 483,348.68

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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.