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Finding the Fourth Proportional to 636,474.32, 878,337.66 and 350,012.96

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Solution

The fourth proportional to 636,474.32, 878,337.66 and 350,012.96 is: 483,019.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,474.32 : 878,337.66 = 350,012.96 : x
  2. Step 2: Convert to fraction form
    636,474.32/878,337.66 = 350,012.96/x
  3. Step 3: Cross multiply
    636,474.32x = 878,337.66 × 350,012.96
  4. Step 4: Simplify right side
    636,474.32x = 307,429,564,256.07
  5. Step 5: Solve for x
    x = 307,429,564,256.07/636,474.32
  6. Step 6: Final answer
    x = 483,019.59

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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.