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Finding the Fourth Proportional to 668,457.78, 922,589.66 and 396,675.54

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Solution

The fourth proportional to 668,457.78, 922,589.66 and 396,675.54 is: 547,482.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,457.78 : 922,589.66 = 396,675.54 : x
  2. Step 2: Convert to fraction form
    668,457.78/922,589.66 = 396,675.54/x
  3. Step 3: Cross multiply
    668,457.78x = 922,589.66 × 396,675.54
  4. Step 4: Simplify right side
    668,457.78x = 365,968,751,578.92
  5. Step 5: Solve for x
    x = 365,968,751,578.92/668,457.78
  6. Step 6: Final answer
    x = 547,482.22

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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.