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Finding the Fourth Proportional to 724,199.28, 999,845.82 and 679,011

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Solution

The fourth proportional to 724,199.28, 999,845.82 and 679,011 is: 937,457.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,199.28 : 999,845.82 = 679,011 : x
  2. Step 2: Convert to fraction form
    724,199.28/999,845.82 = 679,011/x
  3. Step 3: Cross multiply
    724,199.28x = 999,845.82 × 679,011
  4. Step 4: Simplify right side
    724,199.28x = 678,906,310,084.02
  5. Step 5: Solve for x
    x = 678,906,310,084.02/724,199.28
  6. Step 6: Final answer
    x = 937,457.86

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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.