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Finding the Fourth Proportional to 668,329.89, 922,210.01 and 381,868.53

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Solution

The fourth proportional to 668,329.89, 922,210.01 and 381,868.53 is: 526,929.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,329.89 : 922,210.01 = 381,868.53 : x
  2. Step 2: Convert to fraction form
    668,329.89/922,210.01 = 381,868.53/x
  3. Step 3: Cross multiply
    668,329.89x = 922,210.01 × 381,868.53
  4. Step 4: Simplify right side
    668,329.89x = 352,162,978,960.64
  5. Step 5: Solve for x
    x = 352,162,978,960.64/668,329.89
  6. Step 6: Final answer
    x = 526,929.87

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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.