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Finding the Fourth Proportional to 668,465.70, 922,600.60 and 396,683.50

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Solution

The fourth proportional to 668,465.70, 922,600.60 and 396,683.50 is: 547,493.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,465.70 : 922,600.60 = 396,683.50 : x
  2. Step 2: Convert to fraction form
    668,465.70/922,600.60 = 396,683.50/x
  3. Step 3: Cross multiply
    668,465.70x = 922,600.60 × 396,683.50
  4. Step 4: Simplify right side
    668,465.70x = 365,980,435,110.10
  5. Step 5: Solve for x
    x = 365,980,435,110.10/668,465.70
  6. Step 6: Final answer
    x = 547,493.21

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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.