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Finding the Fourth Proportional to 636,489.84, 878,362.32 and 350,011.92

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Solution

The fourth proportional to 636,489.84, 878,362.32 and 350,011.92 is: 483,019.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,489.84 : 878,362.32 = 350,011.92 : x
  2. Step 2: Convert to fraction form
    636,489.84/878,362.32 = 350,011.92/x
  3. Step 3: Cross multiply
    636,489.84x = 878,362.32 × 350,011.92
  4. Step 4: Simplify right side
    636,489.84x = 307,437,282,078.85
  5. Step 5: Solve for x
    x = 307,437,282,078.85/636,489.84
  6. Step 6: Final answer
    x = 483,019.94

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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.