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Finding the Fourth Proportional to 668,631.62, 922,487.24 and 381,948.72

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Solution

The fourth proportional to 668,631.62, 922,487.24 and 381,948.72 is: 526,961.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,631.62 : 922,487.24 = 381,948.72 : x
  2. Step 2: Convert to fraction form
    668,631.62/922,487.24 = 381,948.72/x
  3. Step 3: Cross multiply
    668,631.62x = 922,487.24 × 381,948.72
  4. Step 4: Simplify right side
    668,631.62x = 352,342,818,624.59
  5. Step 5: Solve for x
    x = 352,342,818,624.59/668,631.62
  6. Step 6: Final answer
    x = 526,961.05

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1.5x scale

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.