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Finding the Fourth Proportional to 636,913.48, 878,922.48 and 350,433.76

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Solution

The fourth proportional to 636,913.48, 878,922.48 and 350,433.76 is: 483,588.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,913.48 : 878,922.48 = 350,433.76 : x
  2. Step 2: Convert to fraction form
    636,913.48/878,922.48 = 350,433.76/x
  3. Step 3: Cross multiply
    636,913.48x = 878,922.48 × 350,433.76
  4. Step 4: Simplify right side
    636,913.48x = 308,004,109,414.93
  5. Step 5: Solve for x
    x = 308,004,109,414.93/636,913.48
  6. Step 6: Final answer
    x = 483,588.62

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1.5x scale

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.