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Finding the Fourth Proportional to 636,301.20, 878,086.20 and 345,903.12

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Solution

The fourth proportional to 636,301.20, 878,086.20 and 345,903.12 is: 477,341.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,301.20 : 878,086.20 = 345,903.12 : x
  2. Step 2: Convert to fraction form
    636,301.20/878,086.20 = 345,903.12/x
  3. Step 3: Cross multiply
    636,301.20x = 878,086.20 × 345,903.12
  4. Step 4: Simplify right side
    636,301.20x = 303,732,756,208.94
  5. Step 5: Solve for x
    x = 303,732,756,208.94/636,301.20
  6. Step 6: Final answer
    x = 477,341.17

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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.