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Finding the Fourth Proportional to 668,856.96, 922,961.52 and 396,878.04

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Solution

The fourth proportional to 668,856.96, 922,961.52 and 396,878.04 is: 547,655.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,856.96 : 922,961.52 = 396,878.04 : x
  2. Step 2: Convert to fraction form
    668,856.96/922,961.52 = 396,878.04/x
  3. Step 3: Cross multiply
    668,856.96x = 922,961.52 × 396,878.04
  4. Step 4: Simplify right side
    668,856.96x = 366,303,159,053.02
  5. Step 5: Solve for x
    x = 366,303,159,053.02/668,856.96
  6. Step 6: Final answer
    x = 547,655.45

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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.