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Finding the Fourth Proportional to 445,751.64, 668,602.89 and 325,931.40

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Solution

The fourth proportional to 445,751.64, 668,602.89 and 325,931.40 is: 488,879.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,751.64 : 668,602.89 = 325,931.40 : x
  2. Step 2: Convert to fraction form
    445,751.64/668,602.89 = 325,931.40/x
  3. Step 3: Cross multiply
    445,751.64x = 668,602.89 × 325,931.40
  4. Step 4: Simplify right side
    445,751.64x = 217,918,675,981.75
  5. Step 5: Solve for x
    x = 217,918,675,981.75/445,751.64
  6. Step 6: Final answer
    x = 488,879.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.