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Finding the Fourth Proportional to 668,808.96, 922,895.28 and 396,830.04

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Solution

The fourth proportional to 668,808.96, 922,895.28 and 396,830.04 is: 547,589.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,808.96 : 922,895.28 = 396,830.04 : x
  2. Step 2: Convert to fraction form
    668,808.96/922,895.28 = 396,830.04/x
  3. Step 3: Cross multiply
    668,808.96x = 922,895.28 × 396,830.04
  4. Step 4: Simplify right side
    668,808.96x = 366,232,570,878.21
  5. Step 5: Solve for x
    x = 366,232,570,878.21/668,808.96
  6. Step 6: Final answer
    x = 547,589.21

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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.