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Finding the Fourth Proportional to 488,640.60, 732,960.90 and 470,925.90

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Solution

The fourth proportional to 488,640.60, 732,960.90 and 470,925.90 is: 706,388.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,640.60 : 732,960.90 = 470,925.90 : x
  2. Step 2: Convert to fraction form
    488,640.60/732,960.90 = 470,925.90/x
  3. Step 3: Cross multiply
    488,640.60x = 732,960.90 × 470,925.90
  4. Step 4: Simplify right side
    488,640.60x = 345,170,271,497.31
  5. Step 5: Solve for x
    x = 345,170,271,497.31/488,640.60
  6. Step 6: Final answer
    x = 706,388.85

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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.