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Finding the Fourth Proportional to 636,234.19, 878,019.98 and 345,865.28

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Solution

The fourth proportional to 636,234.19, 878,019.98 and 345,865.28 is: 477,303.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,234.19 : 878,019.98 = 345,865.28 : x
  2. Step 2: Convert to fraction form
    636,234.19/878,019.98 = 345,865.28/x
  3. Step 3: Cross multiply
    636,234.19x = 878,019.98 × 345,865.28
  4. Step 4: Simplify right side
    636,234.19x = 303,676,626,694.02
  5. Step 5: Solve for x
    x = 303,676,626,694.02/636,234.19
  6. Step 6: Final answer
    x = 477,303.22

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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.